Barack Obama

U.S. President Barack Obama waves as he leaves Rome's airport...U.S. President Barack Obama waves as he leaves Rome's airport March 28, 2014. REUTERS/Giampiero Sposito  (ITALY - Tags: POLITICS)

Giampiero Sposito/Reuters

U.S. President Barack Obama waves as he leaves Rome‘s airport. Read more

Pope Francis and President Barack Obama smile as they exchange gifts, at the Vatican Thursday, March 27, 2014. President Barack Obama called himself a "great admirer" of Pope Francis as he sat down at the Vatican Thursday with the pontiff he considers a kindred spirit on issues of economic inequality. Their historic first meeting comes as Obama's administration and the church remain deeply split on issues of abortion and contraception. (AP Photo/Gabriel Bouys,

Gabriel Bouys/AP

Pope Francis and US President Barack Obama exchange gifts at the Vatican on Thursday. It is their first meeting.

Pope Francis Meets President Obama...VATICAN CITY, VATICAN - MARCH 27:  The silhouette of US President Barack Obama is seen as he arrives in his car at the San Damaso courtyard for a meeting with Pope Francis on March 27, 2014 in Vatican City, Vatican. This is Obama's first audience with Pope Francis and it is the second time that he has been received at the Vatican, after an audience with Pope Benedict XVI on July 10, 2009. Barack Obama is the ninth US President to make an official visit to the Vatican. The first, Woodrow Wilson, received by Pope Benedict XV after the end of the First World War.  (Photo by Franco Origlia/Getty Images)

Franco Origlia/Getty

US President Barack Obama arrives at the San Damaso courtyard for a meeting with Pope Francis in Vatican City, Vatican. This is Mr Obama’s first audience with Pope Francis, and it is the second time he has been received at the Vatican, after an audience with Pope Benedict XVI on July 10 2009. He is the ninth US president to make an official visit to the Vatican. The first, Woodrow Wilson, was received by Pope Benedict XV after the end of World War I.

A US army officer escorts US President Barack Obama (2nd-L), Belgium's King Philippe (2nd-R) and Belgian Prime Minister Elio Di Rupo (R) as they visit the WWI Flanders Field Cemetery in Waregem on Wednesday. The cemetery is the final resting place for 368 Americans, most of whom were killed during World War I. Obama will pay his first visit ever to the EU headquarters in Brussels, cementing US-EU opposition to the takeover of Crimea after hitting out at Russian expansionism as a "sign of weakness".

Belga/AFP

A US army officer escorts US President Barack Obama (2nd-L), Belgium’s King Philippe (2nd-R) and Belgian Prime Minister Elio Di Rupo (R) as they visit the WWI Flanders Field Cemetery in Waregem on Wednesday. The cemetery is the final resting place for 368 Americans, most of whom were killed during World War I. Obama will pay his first visit ever to the EU headquarters in Brussels, cementing US-EU opposition to the takeover of Crimea after hitting out at Russian expansionism as a “sign of weakness”.

World Leaders Gather For Nuclear Security Summit 2014...AMSTERDAM, NETHERLANDS - MARCH 24: US President Barack Obama (L) and Prime Minister of the Netherlands Mark Rutte (C) visit the Rijksmuseum ahead of the 2014 Nuclear Security Summit on March 24, 2014 in Amsterdam, Netherlands. The Nuclear Security Summit, held March 24-25, will be attended by world leaders and is aimed at preventing nuclear terrorism.

Jerry Lampen/Getty

Barack Obama, US president (left), and Mark Rutte, Netherlands prime minister (centre), meet in front of Rembrandt’s ‘The Night Watch’ in the Rijksmuseum in Amsterdam before the start of the 2014 Nuclear Security Summit. The summit, held March 24-25, will be attended by world leaders and is aimed at preventing nuclear terrorism.

A Filipino student shouts anti-US slogans outside the US embassy in Manila, Philippines, 21 March 2014 in a rally condemning the docking of the USS Blue Ridge and the upcoming visit of US President Barack Obama to the country. Activists also called for an end to the presence of US troops in the country and the Visiting Forces Agreement (VFA). Obama is to visit Japan, South Korea, Malaysia and the Philippines in late April. The trip is part of his efforts to broaden US engagement in the Asia-Pacific region on all fronts, from strategic security issues to trade and diplomacy. Obama had originally planned an Asia trip for late 2013, but was forced to cancel during the budget and debt limit crisis that closed the US government for more than two weeks in October.

Dennis M. Sabangan/EPA

A Filipino student protests outside the US embassy in Manila, Philippines, in a rally condemning the docking of the USS Blue Ridge and the upcoming visit of US President Barack Obama. Activists also called for an end to the presence of US troops in the country and the Visiting Forces Agreement.

US President Barack Obama attends the National Prayer Breakfast in Washington, DC, on February 6, 2014.

Jewel Samad/AFP

US President Barack Obama endorses the National Day of Prayer by attending the celebratory breakfast in Washington, DC, on Thursday

President Obama Delivers Economic Address At A Maryland Costco...LANHAM, MD - JANUARY 29:  U.S. President Barack Obama greets supporters, local politicans and store employees after delivering remarks at Costco January 29, 2014 in Lanham, Maryland. Repeating some of the same policy proposals from his State of the Union speech the night before, Obama is beginning a two-day, four-state tour to promote a raise in the minimum wage, immigraiton reform and other other policy ideas.  (Photo by Chip Somodevilla/Getty Images)

Chip Somodevilla/Getty

US President Barack Obama greets supporters, local politicians and store employees after delivering remarks at Costco in Lanham, Maryland on Wednesday. Repeating some of the same policy proposals from his State of the Union speech the night before, Mr Obama is beginning a two-day, four-state tour to promote immigration reform and an increase in minimum wage. Read more

Travelling White House staff and press board the rear steps of Air Force One on a foggy morning in Seattle...Travelling White House staff and press board the rear steps of Air Force One on a foggy morning in Seattle, November 25, 2013. U.S. President Barack Obama is attending fundraisers and events on the economy and immigration in Los Angeles and San Francisco on Monday.

Jason Reed/Reuters

White House staff and press board the rear steps of Air Force One on a foggy morning in Seattle. US president Barack Obama is attending fundraisers and events on the economy and immigration in Los Angeles and San Francisco on Monday. Read more

President Barack Obama awards former President Bill Clinton with the Presidential Medal of Freedom, Wednesday, Nov. 20, 2013, during a cermeony in the East Room of the White House in Washington.

Jacquelyn Martin/AP

President Barack Obama awards former president Bill Clinton with the presidential medal of freedom on Wednesday, during a ceremony at the White House, Washington.