In the 1850s, Russia fought a bloody war against Britain, France and other nations, that still has ripple effects today.
The BBC's James Reynolds joins us from Sevastopol in Crimea
Arseniy Yatsenyuk meets with President Obama this afternoon and tomorrow he will speak at the United Nations.
The Crimean parliament said it would declare itself independent if its residents approve a referendum to split off from Ukraine.
NPR's Charlie Mahtesian discusses the week in politics, including the Conservative Political Action Conference.
Russia's Black Sea Fleet is blocking the port of Sevastopol, so Ukrainian ships can't get out and U.N. observers can't get in.
Many on the right are blaming Obama's foreign policy, while others on the left say George W. Bush set the precedent by invading Iraq.
The BBC's Jonathan Marcus joins us to discuss the latest.
Crimea's parliament moved up the date for a public referendum on whether the region should secede.
Two Ukrainian-Americans from different generations and different states join us to discuss the crisis in Ukraine.
Political analyst Ben Judah says it should come as no surprise that Russia is risking political and economic relationships with Western allies.
The BBC's Christian Fraser joins us from Sevastopol, Crimea, with the latest.
NPR's Peter Kenyon joins us from Simferopol, Crimea, with the latest.
The former commandant of the U.S. Army War College, retired Major Gen. Bob Scales, joins us to discuss the latest developments.
President Barack Obama says Russia is "on the wrong side of history" in Ukraine and its actions violate international law.
Global markets have been dropping today as the situation heats up in the Ukraine. The Russian ruble has also been plummeting.
Serhii Plokhii, professor of Ukrainian history at Harvard University, joins us to discuss the growing crisis.
Steven Pifer, former ambassador to Ukraine, discusses the Obama administration's options.
NPR's Ron Elving joins us to discuss the president's policy options in dealing with the crisis in Ukraine.
Russia has control over much of Ukraine's southern region, Crimea. Crowds filled Kiev's Independence Square asking the world to help.