Monday, May 22:
Serbia & Montenegro - Results expected from Sunday's referendum on whether Montenegro should split from Serbia and become independent.
Ukraine - Ukraine hosts a two-day summit of West-leaning ex-Soviet republics. Presidents of Ukraine, Georgia, Azerbaijan, and Moldova expected to participate - countries where Russia has sought in recent years to regain past influence.
Tuesday, May 23:
London - Possible meeting of senior officials from the United States, Britain, China, Russia, France, and Germany to discuss how to get Iran to halt uranium enrichment for its suspect nuclear program. Meanwhile, German Chancellor Angela Merkel is expected to raise the issue with Chinese officials during a three-day trip to China that begins Monday.
Washington - Israeli Prime Minister Ehud Olmert, in his first meeting with President Bush, is expected to present his plan to draw Israel's final borders, with or without a final peace deal with the Palestinians.
Thursday, May 25:
Sochi, Russia - Russian President Vladimir Putin hosts EU leadership at semi-annual summit, where energy and visa policies are expected to dominate.
Kiev, Ukraine - Ukraine's newly elected lawmakers hold their first session, triggering the countdown toward a one-month deadline to form a new governing coalition.
Saturday, May 27:
Vienna, Austria - European Union foreign ministers open two-day meeting to reassess the bloc's future course after year of "reflection" following last spring's strong rejection of EU constitution by French and Dutch voters.
Bishkek, Kyrgyzstan - Opposition holds rally to demand government undertake promised reforms.
Sunday, May 28:
Bogotá, Colombia - Presidential election in which incumbent Alvaro Uribe is the heavy favorite.
- Associated Press