President Barack Obama will meet with the Leaders of Russia, China, India, and South Korea when he attends the Group of Twenty (G20) summit in London next week, the White House said. Spokesman Robert Gibbs announced Wednesday additional bilateral meetings for the president early next month. The White House previously had said Obama would meet with British Prime Minister Gordon Brown. Obama will meet with Russian President Dmitry Medvedev and Chinese President Hu Jintao next Wednesday. A day later, Obama is scheduled to meet with Indian Prime Minister Manmohan Singh and South Korean President Lee Myung-bak. The U.S. president also will meet with Britain's Queen Elizabeth II while in London, the White House said.