Russia adding major firepower in Crimea, NATO chief says
Annexed Ukrainian territory seeing influx of Russian military personnel and hardware, according to NATO intel
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Annexed Ukrainian territory seeing influx of Russian military personnel and hardware, according to NATO intel
Without offering any proof Ukraine defense official claims massive deployment of military hardware in rebel held east
Shelling of high school a stark reminder that the cease-fire agreed has only really ever existed on paper
Rebel leader takes oath in pro-Russia stronghold of Donetsk after elections dismissed as "illegal" by West
The House Speaker may have overlooked some recent Russian history
The Kremlin said it would recognize Ukraine's political shift towards Europe; Poland moves troops to eastern border with Russia
But cease-fire declared last month between Ukrainian forces and rebel fighters has been violated almost daily
Colorado Rep. Cory Gardner, running for Senate, urges Obama to approve Keystone pipeline, "stop blocking responsible energy development"
Government troops and pro-Russian militants agreed to separate themselves by several miles
Congress responds with a standing ovation to Ukrainian President Petro Poroshenko's request for lethal aid
Obama and Congress are sending a message to Russia by hosting the Ukrainian leader, but it's unclear what commitments they'll make
As fighting in key rebel-held city intensifies, team of European observers says it has "taken fire" for first time
People living in Luhansk emerged after months of hiding from shelling; Donetsk reports ongoing fighting near airport
Progress under shaky cease-fire deal reached between gov't in Kiev and pro-Russian rebels has been slow, but steady
Announcement from chief Dutch prosecutor overseeing criminal investigation into jetliner's downing comes after separate probe made its conclusions
The president says the U.S. will step up economic penalties against Russia because there's no "conclusive evidence" Russia is respecting a cease-fire in Ukraine
Major military drill is 2nd announcement by Putin in 24 hours in clear response to NATO's bolstering of defenses over Ukraine
Sanctions resulting from Russian meddling in Ukraine won't be implemented until "an assessment" of cease-fire there made
Poroshenko delivers fiery speech to hundreds in Mariupol in a dramatic show of Kiev's strength in the region
Truce agreed just days earlier by pro-Russian separatists and gov't in Kiev is tested sharply around key cities
Shelling kills a civilian, and government-held airport comes under apparent attack; truce agreement barely held 24 hours
Explosions reported just a day after Ukraine and Russian-backed separatists signed a cease-fire agreement
U.N. estimates 2,600 deaths in conflict between Moscow-backed separatists and government troops in eastern Ukraine
Hours before talks aimed at reaching cease-fire in conflict which has claimed almost 3,000 lives, pro-Russian rebels push for key city
Poroshenko says he's ready to order cease-fire if pact can be reached; NATO leaders agree Russia must be punished