Japan announced it would impose additional sanctions against those responsible for the "annexation of Crimea and destabilisation of eastern Ukraine", without offering further details.
Russian President Vladimir Putin warned on Thursday that Washington's new biting sanctions against his country will boomerang and hit back at US national interests.
Japan will revoke some of its unilateral sanctions on North Korea, the prime minister announced Thursday, after talks on the Cold War kidnapping of Japanese nationals.
The UN Security Council decided to slap sanctions on Ugandan rebels Allied Democratic Forces, who are active in eastern Democratic Republic of Congo, diplomats said.
The United States Thursday slapped sanctions on Uganda -- cancelling a military air exercise, imposing visa bans and freezing some aid -- amid deep US anger at "vile" Ugandan anti-gay laws.
Western leaders said they stood united Thursday ahead of their first direct meetings with Russian leader Vladimir Putin on Ukraine, with President Barack Obama giving him a month to back down or face more sanctions.
France's foreign minister on Tuesday labelled as "unreasonable" a $10-billion-dollar fine the US is reportedly seeking from BNP Paribas bank on charges of violating sanctions on Iran, Sudan and Cuba.
Twin car bombings in central Nigeria killed at least 118 people and brought entire buildings down Tuesday, in the latest affront to the government's internationally-backed security crackdown.
The head of Russian state gas giant Gazprom escaped being named on a list of EU sanctions over the Ukraine crisis after lobbying from European energy firms, Moscow newspaper Vedomosti reported.
Russia might face a zero economic growth this year. It’s no good news for us as the two economies are interdependent to a great extent: Kazakhstan’s Central Bank Governor.
Russia's energy giant Gazprom warned on Tuesday that new Western sanctions aimed at punishing the Kremlin for its perceived attempts to destabilise Ukraine could both hurt its stock price and leave Europe without crucial gas supplies.
The United States has been moving cautiously in slapping sanctions on Russia over the Ukraine crisis, keen to keep its EU allies on board and avoid exposing fault lines within the European bloc, analysts say.
The Group of Seven rich countries agreed Saturday to impose new sanctions on Russia over the crisis in Ukraine, after Kiev accused Moscow of seeking to trigger a "third world war".
US President Barack Obama accused Russia on Thursday of failing to respect an agreement to defuse the crisis in Ukraine, the latest salvo in the Cold War-like duel between Washington and Moscow over the future of the ex-Soviet nation.
US Vice President Joe Biden met Ukraine's new pro-Western leaders Tuesday to offer firm American backing as Washington and Moscow traded blame over an unravelling peace deal to defuse the country's deep crisis.
The United States unveiled sanctions Friday against six of Crimea's breakaway leaders, including the official who signed the deal with Moscow to split the peninsula from Ukraine.