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BERLIN, GERMANY - JUNE 18: U.S. President Barack Obama, his wife Michelle and their daughters Sasha and Malia descend from Air Force One upon their arrival at Tegel airport on June 18, 2013 in Berlin, Germany. Obama is visiting Berlin for the first time during his presidency and his speech tomorrow at the Brandenburg Gate is to be the highlight. Obama will be speaking close to the 50th anniversary of the historic speech by then U.S. President John F. Kennedy in Berlin in 1963, during which he proclaimed the famous sentence: “Ich bin ein Berliner.” (Photo: Sean Gallup/Getty Images)

Photo By Photo: Sean Gallup/Getty Images

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G-8 Summit Over - The G-8 summit ended Friday, and President Obama set off for a trip to Poland. During the two-day meeting, leaders from the world’s top economies pledged their support to Tunisia and Egypt, promising them $40 billion in aid.(Photo: AP Photo/Charles Dharapak)

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African Leaders - The newly elected leaders from Guinea (President Alpha Conde), Niger (President Mahamadou Issoufou) and Ivory Coast (President Alassane Ouattara), along with African leaders from Senegal, South Africa, Ethiopia and Algeria were invited to attend the summit as guests (each summit for the past 10 years has included a meeting with African leaders). Here, Obama walks with, from left to right: Conde, Issoufou, U.N. Secretary General Ban Ki-moon, Egypt's Prime Minister Essam Sharaf, and Italy's Prime Minister Silvio Berlusconi to a lunch during the summit.(Photo: AP Photo/Charles Dharapak)

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Obama and Sarkozy - Following their meeting Thursday, Obama and Sarkozy stated they agreed Libyan leader Moammar Gadhafi should step down. In addition, Sarkozy called Obama’s controversial speech on the Middle East last week “clearsighted and bold.”(Photo: AP Photo/Charles Dharapak)

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Meeting With Japanese PM - During a meeting with Japan’s Prime Minister Naoto Kan Obama met pledged that the U.S. will continue to “stand by Japan for as long as it takes for Japan to recover” from the earthquake and tsunami that devastated the nation in March. The twin disasters cost the nation $300 billion in damages.(Photo: AP Photo/Charles Dharapak)

Photo By Photo: AP Photo/Charles Dharapak

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Dinner Meeting - President Obama dined with G-8 leaders including French President Nicolas Sarkozy and his wife Carla Bruni-Sarkozy at local restaurant Le Circo’s Restaurant Thursday.(Photo: AP Photo/Eric Feferberg, Pool)

Photo By Photo: AP Photo/Eric Feferberg

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G-8 Summit - Obama arrived in Deauville, France, for the G-8 Summit Thursday. The summit brings together leaders of eight of the world’s most powerful economies (France, Germany, Italy, Japan, the United Kingdom, the United States, Canada and Russia) for bilateral meetings and work sessions. This year, the two-day summit will address the Internet, aid for North African countries and ways to resolve the Libyan conflict.(Photo: AP Photo/Philippe Wojazer, Pool)

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Roundtable Meeting - G8 leaders, from left: European Council President Herman Van Rompuy, Japanese Prime Minister Naoto Kan, Italian Prime Minister Silvio Berlusconi, Canadian Prime Minister Stephen Harper, German Chancellor Angela Merkel, French President Nicolas Sarkozy, U.S. President Barack Obama and European Commission President Jose Manuel Barroso participate in a roundtable meeting. (Photo: AP Photo/Markus Schreiber, Pool)

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Meeting With Russia’s Leader - Obama met with Russian President Dmitry Medvedev, and the two leaders agreed to work together on building a missile defense system in Europe. "We committed to working together so that we can find an approach and configuration that is consistent with the security needs of both countries, that maintains the strategic balance and deals with potential threats that we both share," Obama said after the meeting.(Photo: AP Photo/Charles Dharapak)

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Reciprocal Dinner - Rounding out their United Kingdom visit Wednesday, President Obama and first lady Michelle hosted Queen Elizabeth II and Prince Philip for a dinner at London’s Winfield House, which is the official residence of the U.S. ambassador to the United Kingdom. (Photo: AP Photo/Charles Dharapak)

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The Guestbook - The president holds the guestbook at London’s Winfield House, the official residence of the U.S. ambassador to the United Kingdom, as Queen Elizabeth signs it. (Photo: AP Photo/Charles Dharapak)

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European Trip - This week President Barack Obama and first lady Michelle Obama set off on a five-day, four-country visit to Europe. He’s set to meet with the heads of state of Ireland, Britain, Poland and France, where he will attend the G8 summit at the end of the week. The two left D.C. Sunday night for their first stop: Ireland. (AP Photo/Matt Dunham)

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Cheers! - On Monday, he connected with his Irish roots, drinking a Guinness at a pub in Moneygall, where his great-great-great grandfather is from.(AP Photo/Charles Dharapak)

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Speaking to Thousands - Obama and Prime Minister Enda Kenny delivered speeches to thousands in Dublin. During his address, the president proclaimed that he felt at home and praised the nation for the successful Northern Ireland peace agreement, saying that it “speaks to the possibility of peace” in other parts of the world. (AP Photo, Pool)

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An Early Departure for London - Late Monday, the first couple arrived in London, leaving Dublin ahead of schedule due to concerns over an ash cloud spreading from an Iceland volcano. The two will visit the nation for two days, meeting with members of the Royal Family as well as British Prime Minister David Cameron.(Photo: AP Photo / Chris Radburn, PA Pool)

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A Meeting With Prince Charles - Here, President Obama speaks to Britain’s Prince Charles as they leave Winfield House, the official residence of the U.S. Ambassador in Regent’s Park. First lady Michelle Obama also met with the Prince’s wife, Camille, the Duchess of Cornwall. Per protocol of a state visit, the Prince and Duchess were charged with welcoming the first couple to London.(Photo: AP Photo/Dominic Lipinski/Pool)

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Buckingham Palace Arrival - The Obamas next visited Buckingham Palace, where the first couple and the Royal Family observed the Guard of Honor, the first battalion Scots Guard, during a welcoming ceremony at Buckingham Palace that included a gun salute and the American national anthem. Later, President Obama and Prince Philip, accompanied by a colonel, inspected the Guard.(Photo: AP Photo/Carolyn Kaster)

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The Obamas and the Royals - Here, the Obamas pose for photos with Queen Elizabeth and Prince Philip shortly after they arrived at Buckingham Palace. ”Very warm words have been spoken between the royal family and the Obamas,” said a palace spokesman. “There is a genuine, genuine—and I really mean this—a genuine warmth between the two families.”(Photo: AP Photo/Toby Melville, pool)

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Tour the Palace - The Obamas, Queen Elizabeth and Prince Philip toured Buckingham Palace’s Portrait Gallery. During the traditional exchange of gifts, the royals gave the Obamas a selection of historic letters between U.S. presidents and Queen Victoria during the 1800s. The Obamas gave Queen Elizabeth II a hand-made, leather-bound album filled with rare memorabilia and photos that chronicles the trip that the queen’s parents’, King George VI and Queen Elizabeth, made to the United States back in 1939. (Photo: AP Photo/Charles Dharapak)

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The Newlyweds - The Obamas also met with newlyweds Prince William and Catherine, the Duke and Duchess of Cambridge, while at Buckingham Palace.(Photo: AP Photo/Charles Dharapak, Pool)

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Labor Party Leader - President Obama met with Britain’s opposition Labor Party leader Ed Miliband while at Buckingham Palace. During the meeting the leaders discussed the declining standards of the middle class, and the “challenges for ‘progressive politics’ in the U.K. and the U.S., Libya, Pakistan and Afghanistan,” the BBC reports.(Photo: AP Photo/Stefan Rousseau, Pool)

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Westminster Abbey - While at Westminister Abbey, President Obama laid a wreath at the Grave of the Unknown Warrior. The president wrote in the guest book, “It is a great privilege to commemorate our common heritage and common sacrifice.”(Photo: AP Photo/PA, John Stillwell)

Photo By Photo: AP Photo/PA

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Meeting Britain’s Prime Minister - The first couple then went to 10 Downing Street in London to meet with British Prime Minister Cameron and his wife Samantha Cameron. The two were due for a meeting to discuss serious issues concerning recent events, especially in the Middle East, Cameron told Britain’s ITV prior to the event. "We've got some proper, very long talks, discussions about Libya, Afghanistan, security issues and also prosperity," he said. "The other big concern Barack and I have is making sure there are more jobs for our people, so getting trade going, making sure the economy's moving, dealing with our debts and deficits." The two will appear together at a joint press conference Wednesday. The president is also due to address both houses of British Parliament that day. (AP Photo/Matt Dunham)

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Table Tennis - Obama and Cameron played table tennis during their visit to London’s Globe Academy, a math and performing arts school with a high proportion of low-income students.  (Photo: Charles Dharapak)

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Wrong Date - In his first faux pas of the day, President Obama mistakenly wrote the wrong year (2008) as he signed the distinguished visitors’ book during a tour of Westminster Abbey. (Photo: AP Photo/John Stillwell, Pool)

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Banquet - The Queen of England hosted a lavish welcoming banquet Tuesday evening at Buckingham Palace for the president and first lady.(Photo: AP Photo/Larry Downing, Pool)

Photo By Photo: AP Photo/Larry Downing

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The Invitees - The event was truly an A-list affair, with American actors Tom Hanks and Kevin Spacey among the stars in attendance. Other royals and British leaders and Secretary of State Hillary Clinton were also among the approximately 170 guests. Lamb with basil, zucchini, sautéed radish and crayfish sauce was on the menu, People reports.(Photo: AP Photo/Lewis Whyld, Pool)

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Toasting Gaffe - During his toast to the Queen, the president continued to talk over the band as they played the British national anthem, which elicited some awkward looks from her majesty and some others in the room. When he realized his error he put his glass down then placed his hand over his heart until the end of the anthem.(Photo: AP Photo/Lewis Whyld, Pool)

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Joint News Conference - During a news conference with Britain's Prime Minister David Cameron, the president ruled out a deadline for ending NATO's military assault in Libya, but said it would be over "in a timely fashion." The leaders differed on Middle East policy.  Obama strongly condemned the Palestinians' plan to unilaterally seek statehood recognition from the United Nations; Cameron said it wasn't the right time to weigh in on that issue. (Photo: AP Photo/Carolyn Kaster)

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Heading to Address Parliament - President Barack Obama, escorted by John Bercow, speaker of the House of Commons, and Helen Hayman, Lord Speaker of the House of Lords, walk into Westminster Hall to address members of both Houses of Parliament.(Photo: AP Photo/Carolyn Kaster)

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Obama’s Speech - During an address to Parliament, Obama sought to reassure the world that American and European influence remains as important as ever, even as rising powers like China and India assert themselves. “Even as more nations take on the responsibilities of global leadership,” Obama said, “our alliance will remain indispensible to the goal of a century that is more peaceful, more prosperous and more just.”(Photo: AP Photo/Charles Dharapak)

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Clinton Meets With British Counterpart - Secretary of State Hillary Clinton talks with British Foreign Secretary William Hague outside British Prime Minister David Cameron's official residence, where he was meeting with President Obama, at 10 Downing Street.(Photo: AP Photo/Lefteris Pitarakis)

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School Visit - While the president was addressing Parliament, first lady Michelle Obama went to Oxford and met with children from the Elizabeth Garrett Anderson school.(Photo: AP Photo/Kirsty Wigglesworth)

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Protesters - Protesters, both dressed as detainees at the U.S. military detention center in Guantanamo, Cuba, demanded that the U.S. shut down the detention center as Obama had once promised.(Photo: AP Photo/Lefteris Pitarakis)

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U.S. President Barack Obama speaks from behind a bulletproof glass at the Brandenburg Gate in Berlin, June 19, 2013. U.S. President Barack Obama will unveil plans for a sharp reduction in nuclear warheads in a landmark speech at the Brandenburg Gate on Wednesday that comes 50 years after John F. Kennedy declared "Ich bin ein Berliner" in a defiant Cold War address.         (Photo: REUTERS/Fabrizio Bensch)

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BERLIN, GERMANY - JUNE 19: U.S. President Barack Obama greets schoolchildren from a local German-American school at Bellevue Palace on June 19, 2013 in Berlin, Germany. Obama is visiting Berlin for the first time during his presidency and his speech at the Brandenburg Gate is to be the highlight. Obama will be speaking close to the 50th anniversary of the historic speech by then U.S. President John F. Kennedy in Berlin in 1963, during which he proclaimed the famous sentence: “Ich bin ein Berliner.” (Photo: Sean Gallup/Getty Images)

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Fans of US President Barack Obama are pictured with the flag of Kenya in Berlin, on June 19, 2013. Obama and first lady Michelle are on a two-day official visit to Germany. Obama will walk in John F. Kennedy's footsteps this week on his first visit to Berlin as US President, but encounter a more powerful and sceptical Germany in talks on trade and secret surveillance practices.  AFP PHOTO / OLIVER LANG        (Photo: OLIVER LANG/AFP/Getty Images)

Photo By Photo: OLIVER LANG/AFP/Getty Images