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.
The day after disrupting voting in 69 out of 375 electoral districts, Thai antigovernment protesters resumed marches in Bangkok today. They seem uninterested in a negotiated end to unrest.
UN-sponsored talks in Switzerland yielded a provisional agreement to allow civilians to leave a besieged city, but rebel demands for a dictator's exit are hitting a wall.
A fragile truce remains in effect in the embattled Ukrainian capital of Kiev. But many are starting to question if the country can hold together.
Bangkok shutdown: Tens of thousands of anti-government protesters thronged Bangkok today. Police kept a low profile and the head of the army denied a coup is in the works.
The US promised to support Iraq's fight to oust Al Qaeda fighters from occupied cities in Anbar Province – but no boots on the ground. Iran has also offered support.
President Kiir called the fighting an 'attempted coup' in the world's newest nation.