The US President's Chief of Staff, Denis McDonough, has said that the election of Hassan Rouhani to the Iranian presidency is a "potentially hopeful sign".
He added that Rouhani "will find a partner in us" if he lives up to his nation's obligation to "come clean" on its nuclear programme.
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David Cameron will stand down as Conservative leader ahead of the general election expected in 2020, Iain Duncan Smith said.
Delegates at the SNP spring conference have backed a move to allow all-female shortlists in the Scottish Parliament election next year.
Michael Clarke ended his one-day international career by leading Australia to a simple World Cup final win over New Zealand.