In Tokyo, Obama accuses Moscow of doing nothing to decrease tensions in the region.
Russia’s President Vladimir Putin on Thursday dismissed claims that Russian special forces are fomenting unrest in eastern Ukraine as “nonsense,” but expressed hope for success of four-way talks on settling the crisis.
Russia is preparing to formally annex the Black Sea peninsula after Sunday’s referendum.
U.S. and Europe are threatening economic and political consequences if Russia does not stand down in Ukraine.
Russian president’s name was submitted for consideration despite recent saber-rattling.
The pro-Russian leader of Ukraine’s Crimea appealed to Russia’s president for help in keeping the peace.
Journalists and tourists have been able to board planes in Moscow with toothpaste and other liquids, say officials are not checking for them.
Two members of the Russian punk band Pussy Riot, who spent nearly two years in prison for their irreverent anti-government protests, said they still want to topple President Vladimir Putin.
A female suicide bomber blew herself up on a city bus in southern Russia on Monday, killing six people and injuring about 30, officials said.
The father of former National Security Agency systems analyst Edward Snowden arrived in Moscow Thursday morning to meet with his son who has received asylum in Russia and has been living at a secret location.