david cameron

David Cameron speaks to the media on July 13 as he leaves 10 Downing St. in London after formally resigning as prime minister. Cameron announced Monday that he is resigning from his position as a member of Parliament. Frank Augstein/AP hide caption

A police officer strokes Larry, the cat who patrols 10 Downing St. in London. Although David Cameron has resigned as prime minister, Larry will retain his position as prime mouser. Justin Tallis/AFP/Getty Images hide caption

Theresa May, Britain's home secretary and a member of the Conservative Party, is poised to become the new prime minister this week. She favors keeping Britain in the European Union, but says she accepts the will of voters who opted to leave the EU in a June 23 referendum. Matt Dunham/AP hide caption

A European Union flag with a hole cut in the middle flies at half-staff outside a home in Knutsford, England, after the results of the Brexit referendum. Christopher Furlong/Getty Images hide caption

Chinese President Xi Jinping (left) toasts with Britain's Queen Elizabeth II during a state banquet at Buckingham Palace in London on the first day of the state visit in October 2015. Elizabeth said on camera that Chinese officials had been "very rude" during the official visit. Dominic Lipinski/AP hide caption

British Prime Minister David Cameron speaking during the Conservative Party Spring Forum on Saturday in London. WPA Pool/Getty Images hide caption

British Prime Minister David Cameron arrives Friday for the second day of a European Union summit in Brussels. Dan Kitwood/Getty Images hide caption

President Obama said Thursday that he's taking "very seriously" the possibility that a bomb brought down a Russian plane in Egypt on Saturday, killing all aboard. Evan Vucci/AP hide caption

British Prime Minister David Cameron speaks as President Obama looks on during a joint news conference in the East Room of the White House on Friday. Alex Wong/Getty Images hide caption

People gather in London's Trafalgar Square on Monday for a rally urging Scotland to stay with the U.K. Polls are showing that the "yes" and "no" camps are neck and neck. Andrew Cowie/EPA/Landov hide caption

A frame grab from a video released by the Islamic State shows an IS militant holding a knife before purportedly executing British aid worker David Cawthorne Haines. Islamic State Video/EPA /LANDOV hide caption

The prime minister's "red box," looking rather lonely, on a train Saturday from London to York. The Mirror made it front page news. The Mirror hide caption