Mitt Romney joins calls for US candidate to quit race

US Republican presidential candidate Mitt Romney has called on embattled congressman Todd Akin to withdraw from the race for a Senate seat in Missouri.

Mr Akin has sparked uproar by claiming women's bodies could prevent pregnancy in cases of "legitimate rape".
He is defying intense pressure from his own party to leave the race, accusing people of over-reacting.
Correspondents say Republicans fear the backlash could sink their bid to win control of the US Senate in November.

Mr Romney said on Monday Mr Akin's remarks were "offensive and wrong", but he had stopped short of urging him to drop out at that point.
But on Tuesday, Mr Romney said: "Today, his fellow Missourians urged him to step aside, and I think he should accept their counsel and exit the Senate race."