Britain's Prime Minister David Cameron and U.S. President Barack Obama
President Barack Obama and his wife Michelle enjoy a glass of Guinness in his ancestral home of Moneygall, Ireland May 23.
President Barack Obama and first lady Michelle Obama meet Britain's Prince William and his new wife Catherine at Buckingham Palace May 24. The president's visit, however, was shadowed by the tornadoes that ripped across the U.S. Midwest the day before, killing 116 people. He took time out to say he was "heartbroken" over the losses.