Today and Thursday: Obama will hold separate meetings at the G20 summit in London with Russian President Dmitry Medvedev, Chinese President Hu Jintao, Saudi Arabia's King Abdullah, Indian Prime Minister Manmohan Singh and South Korean President Lee Myung-bak.

Friday and Saturday: He'll then go to Strasbourg, France, and Kehl, Germany, to meet with French President Nicolas Sarkozy and German Chancellor Angela Merkel. Obama will deliver a major address on NATO and take questions from European students. On Saturday, there will be a full day of meetings and a celebration of the 60th anniversary of the NATO alliance.

Sunday: Prague, Czech Republic, for the E.U. summit. Obama will deliver a speech on nuclear nonproliferation and meet with Czech Republic President Vaclav Klaus, former Czech President Vaclav Havel and other leaders.

Monday: Ankara and Istanbul, Turkey. Obama will meet with Turkish President Abdullah Gul and Prime Minister Tayyip Erdogan.

news services