Today: Meets with Italy's president, Giorgio Napolitano, and Italy's premier, Silvio Berlusconi.

Friday: Meets with Pope Benedict at the Vatican; speaks to the Organization for Economic Cooperation and Development in Paris; dines with France's president, Nicolas Sarkozy.

Saturday: Meets with Sarkozy and holds a news conference.

Sunday: Visits Britain's Queen Elizabeth II; dinner with Britain's prime minister, Gordon Brown.

Monday: Visits Belfast, Northern Ireland; returns to Washington.