Washington, May 28 (IANS) The US said that it is **t contemplating an extension of Iran nuclear talks beyond the June 30 deadline. The P5+1 countries -- the US, Britain, France, China, Russia, plus Germany -- are making efforts to reach a final deal to curb Tehran's nuclear programme by the deadline, State Department spokesman Jeff Rathke said on Wednesday at a regular briefing, Xinhua reported. The remark came after a senior Iranian nuclear negotiator, Abbas Araqchi, said the talks are likely to be extended beyond the self-imposed deadline.