Oleksandr Turchynov, Ukraine’s acting president, dismissed the head of Odessa's regional administration on Tuesday after the fatal riot.
A general cites a "drastic" rise in military flights near U.S. territories, Korea and Japan.
Fighting in Slovyansk killed dozens of people on Monday as pro-Russian forces shot down a third helicopter with anti-aircraft missiles.
The pro-Russian protesters stormed into a police headquarters in Odessa, demanding the release of pro-Russian protesters.
Assets belonging to former Ukrainian president Viktor Yanukovich and people close to him were frozen.
"Russians won't abandon their own," militants chant.
Ukraine attempts to reclaim the east; dramatic video shows bank being torched in Mariupol.
"It will be impossible to convince them to lay down arms," says Putin spokesman Dmitri Peskov.
Some long for "the good old days," while others fear them.
Detainees may face charges of inciting riots and murder for Friday's violence in eastern Ukraine.
Experts debate what could happen to the global economy if the Ukraine conflict worsens.
Participants in the unrest show the state of Ukraine on its bloodiest day since February.
Sergei Lavrov goes to Latin America to make new friendships, rekindle old ones and thank Russia's supporters in the Ukraine crisis.
The Obama-Merkel meeting occurred as clashes in Odessa, Ukraine, worsened Friday and the U.N. Security Council met in an emergency session.
A fire related to violence in Odessa causes the highest death toll of the Ukrainian crisis so far.
Ukraine says pro-Russians defending their grip on eastern city of Slavyansk have shot down two helicopters, killing at least one pilot.
Separatists have seized government buildings in Eastern Ukraine. But this action, if confirmed, would be the first big response by Kiev.
SpaceX wants its contract, but the United Launch Alliance isn't going to let it go so easily.
Everyone's favorite Ukrainian politician is back.
Workers held banners proclaiming support for President Putin after the seizure of territory from neighboring Ukraine.
In its quarterly call, the company assured shareholders that sanctions against a Russian oil company president won't impede business.
Russia President Putin said the withdrawal of Ukrainian military units, ending violence and launching a national dialogue are key issues.
