Tensions rise between security forces and protestors in Ukraine; South Korea and the United States hold military exercises; and the Sochi Olympics come to a close.

A preview of world events in the coming week from CFR.org: President Obama visits Africa; the U.S. expands sanctions on Iran; NATO's Secretary General goes to Georgia; and the U.N. reports on its Mil…

A preview of world events in the coming week from CFR.org: United States-North Korea talks are held in Geneva; the first post-Arab Spring election takes place in Tunisia; and United Nations Day is ma…

Group of Twenty foreign ministers convene in Nagoya, Japan, district council elections are held in Hong Kong amid rampant and ever-growing protests, and NATO leaders hold a meeting in London.

Americans remember former Secretary of State Colin Powell, Israeli and Russian leaders hold a summit in Sochi, and China undergoes a World Trade Organization policy review.