Major world powers have begun talks about a United Nations Security Council resolution to lift U.N. sanctions on Iran if a nuclear agreement is struck with Tehran, a step that could make it harder for the U.S. Congress to undo a deal, Western officials said.
European Union leaders are unlikely to reach agreement at their summit next week to prolong economic sanctions on Russia that expire in July, a senior EU official said on Friday.
The killing of Russian opposition figure Boris Nemtsov within sight of the Kremlin has exposed rarely seen tensions between different camps inside President Vladimir Putin's system of rule.
The civilian and military heads of NATO cautioned the European Union on Wednesday against duplicating efforts following remarks by the president of the EU Commission suggesting the bloc should develop an "EU army" to deter Russia.
