March 31, 2009 - 22:27 AMT
U.S. President launches European tour
U.S. President Barack Obama leaves Tuesday on his first visit to Europe as president.

He will travel first to London for a summit of the G-20 industrialized and developing nations, which will focus on the global economic crisis.

White House spokesman Robert Gibbs said Saturday that the President and the United States are going to listen in London, as well as lead.

Mr. Obama also has plans to meet on the sidelines of the summit with a host of world leaders, including the British and Indian prime ministers, the presidents of China and Russia, and the king of Saudi Arabia.