Emmanuel Macron acknowledges supporters at the Louvre on Sunday after winning the French presidential election. Pro-EU centrist Macron defeated far-right rival Marine Le Pen by a comfortable margin. Patrick Aventurier/Getty Images hide caption

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Patrick Aventurier/Getty Images

U.S. citizens who travel to Europe won't have to worry about having a visa requirement reinstated, thanks to a European Commission decision. Here, a sign for Americans returning home is seen at JFK International Airport in New York. Ramin Talaie/Corbis via Getty Images hide caption

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Ramin Talaie/Corbis via Getty Images

French Presidential candidates: Jean-Luc Melenchon (left), Francois Fillon, Marine Le Pen and Emmanuel Macron. Lionel Bonaventure/AFP and Sylvain Lefevre/Getty Images hide caption

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Lionel Bonaventure/AFP and Sylvain Lefevre/Getty Images

Britain's Prime Minister Theresa May speaks to the media outside her official residence of 10 Downing St. in London on Tuesday. May announced she will seek early elections to be held June 8. Alastair Grant/AP hide caption

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Alastair Grant/AP

The limestone Rock of Gibraltar towers above the pensinsula, a British dependent territory that profits from tourism, finance and its shipyard. Sean Gallup/Getty Images hide caption

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Sean Gallup/Getty Images

Scottish First Minister Nicola Sturgeon and Deputy First Minister John Swinney arrive at Scottish Parliament on Tuesday. They attended the second day of debate on a motion that ultimately granted Sturgeon the authority to pursue an independence referendum. Andy Buchanan/AFP/Getty Images hide caption

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Andy Buchanan/AFP/Getty Images

A European court has sided with employers who restrict Muslim women from wearing Islamic headscarves. Here, women wearing niqab visit the Dutch Senate last November, as restrictions on Islamic head coverings were being debated. AFP/Getty Images hide caption

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AFP/Getty Images

Supporters of Turkey's President Recep Tayyip Erdogan walk to the Dutch consulate in Istanbul on Saturday. Turkey and the Netherlands escalated their spat on Saturday as the Dutch withdrew landing permission for the Turkish foreign minister's plane. Emrah Gurel/AP hide caption

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Emrah Gurel/AP

The European Union's top diplomat, Federica Mogherini met with U.S. Secretary of State Rex Tillerson at the State Department. Alex Wong/Getty Images hide caption

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Alex Wong/Getty Images

Italian Prime Minister Matteo Renzi announces his resignation during a press conference in Rome, after the results of Sunday's referendum on constitutional reforms. Andreas Solaro/AFP/Getty Images hide caption

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Andreas Solaro/AFP/Getty Images

A photograph of Jo Cox, the 41-year-old Labour lawmaker who was fatally shot and stabbed in June, was among tributes in London's Parliament Square following her death. Matt Dunham/AP hide caption

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Matt Dunham/AP