Sen. Cardin said he's watching closely to see if Russia interferes with Ukraine's election.
The Russian president called Edward Snowden a fighter "for human rights."
Carney said it's too early to say if the Kremlin is really pulling back troops from border.
The move could benefit U.S. defense companies who could be awarded the contracts instead.
Lavrov referred to people wearing black uniforms with no identification.
The weekend vote was "illegal under Ukrainian law," the White House said.
“We’re not at war with Russia,” the defense secretary said.
It was the Russian president's first trip to the region since its annexation.
President Obama announced Wednesday that he plans to remove Russia from a trade benefits program...
Jay Carney said officials are "extremely concerned" by deteriorating conditions.
Both leaders said they will back sanctions targeting sectors of the Russian economy.
More than $3 billion is slated for immediate release.
At least six members of Congress will help monitor elections on Sunday.
The House adopted a proposal late Wednesday that would prevent the Defense Department from entering...
Biden on Wednesday spoke during a trip to neighboring Romania.
Russia's foreign minister said Wednesday that Ukraine was "close to a civil war."
Burisma, Ukraine's largest private gas producer, hired Vice President Biden's youngest son.
Russia is set to meet with Ukraine and the European Union on May 15.
A representative said the U.S. would not recognize results of the self-rule votes.
38 percent say U.S. influence has been positive.
Putin also called on separatists in Ukraine to delay a referendum on autonomy.
However, Engel said that Putin was “trying everything he can” to disrupt planned elections.
The Defense secretary called recent Russian aggressions a “clarifying moment” for NATO.
A State Department official said U.S. energy is “just one tool among many that we can and are...