Without millions in funding from the U.S., experts worry Russia won't properly safeguard their nuclear stores
Poroshenko held a panel of a bus he said was hit by a Russian-supplied rocket as a "symbol of the terroristic attack on my country."
The foreign minister's statement comes after Kiev accused Russian forces of attacking its troops in eastern Ukraine on Tuesday.
"#YesWeTan" trended as Internet users feared President Obama would wear a tan suit during the 2015 State of the Union.
The head of U.S. Army Europe will discuss joint exercises and training with Russia's enemy.
Obama's speech comes nearly three months after Democrats lost the Senate and House to GOP lawmakers.
Tuesday's speech is expected to go light on foreign policy despite the myriad issues facing the world.
Video from a pro-Russian TV station may prove that Russians are fighting in East Ukraine, trying to take control of the strategic site.
Russia and Iran want to expand joint operations and "confront the expansionist intervention" of the U.S., according to Iran.
As the battle for Donetsk airport escalates, OSCE has warned of the fighting spreading further into the city.
Ukraine's prime minister said Russian military forces and equipment had entered Ukraine.
Attempts to reach the fuselage where bodies of victims could be trapped were hindered Thursday due to bad weather and rough seas.
Russia was also excluded from last year's G7 meeting, in response to its role in the Ukraine crisis.
The need to avoid Syria on the way to Europe results in beautiful views of a winter moonscape.
For Russia, oil revenue pays for half of its budget; for Venezuela, it's 96 percent.
Brooklyn Nets owner Mikhail Prokhorov isn't the only Russian billionaire pulling out of U.S. investments.
The united resolve by President Barack Obama and British Prime Minister David Cameron comes ahead of the latter's two-day trip to Washington.
Ukrainian forces are losing ground inside Donetsk airport as rebel fighters impose themselves.
The delay may cost France billions in penalties if Russia proceeds with legal action.
Experts agree that the war in eastern Ukraine will get worse as a peace summit is canceled.
After months of fighting, pro-Russian forces are close to taking a key target in the Ukrainian civil war.
Russian, German and French leaders had been invited to talks in the Kazakh capital Astana by Ukrainian President Petro Poroshenko.