Ukraine's new president-elect Petro Poroshenko faces a stiff challenge in prosecuting an "anti-terrorist" operation in eastern Ukraine, where a border patrol camp has come under heavy fire.
Russian fighters are among the separatist forces battling Ukraine's poorly equipped military for control of eastern provinces. A pullback of Moscow's troops could defuse tensions with the West.
Gen. Hussein Ishaq was the commander of Syria's air defenses and among the highest-ranking regime officials killed since the conflict began in 2011.
Separatists in eastern Ukraine say that Sunday's referendums strongly favored self-rule for two regions. But questions remain over the validity of a vote that Kiev has strongly rejected.
Ukraine's interior minister announced it has sent a new police unit, involving 'civilian activists,' to bolster security in Odessa after a deadly weekend that left at least 40 dead.
Ukrainian troops aim to dislodge pro-Russian militants in Slovyansk. Russian warnings about military action against the east are boosting fears that it might invade.
President Obama said the measures are aimed at 'changing Putin's calculus' on Ukraine, and that further 'Russian aggression' could trigger more sanctions.
Ukrainian efforts to regain control over its industrial eastern region bordering Russia appear to be floundering after some units defected. Pro-Russian forces have seized another building in Donetsk.
Ukraine's interim president had ordered pro-Russian protesters to hand back occupied buildings or face a crackdown, but so far neither has happened, leaving Ukraine in a tough spot.
Russia continues to deny NATO accusations that it is gathering troops on the border as it hastens to prepare for a possible cutoff of essential Ukrainian-made military parts.
North Korea initiated today's exchange of artillery shells, firing into waters claimed by South Korea and prompting a response from the South amid ongoing US-South Korean war games.
At least 60 Ukrainian marines were detained today at a Crimean port as world leaders meet in The Hague to decide on a joint response to Moscow.
Officials announced that Sunday's referendum showed 96.77 percent support to break away from Ukraine and join Russia – a tally that seems dubious.
The Taliban have tried to undermine every election since US-backed forces took power in 2001. The Interior Ministry claimed that 95 percent of polling stations will open on election day.
Western options so far appear to be limited to diplomatic overtures and rebukes. But tensions are taking a toll on Russian stocks and bonds as well as the ruble.
Ukraine's new leaders issued an arrest warrant for Yanukovych, who was impeached on Saturday and is on the run. The charges are linked to recent deadly violence in Kiev.
Beijing on Tuesday dismissed the UN effort, which details crimes including extermination, enslavement, and torture, as 'unreasonable criticism.'
The agreement to establish cease-fires to allow aid delivery was the sole accomplishment of the last round of Syria peace talks, but the first mission in Homs was marred by violence.