Hagel has shown some admirable willingness to advise caution overseas. He is seen as unenthusiastic over the prospects of a US war on Iran, which is certainly to be welcomed. But let us not forget that he did vote for the war against Iraq, he has expressed support for multi-lateral sanctions on Iran, and last year he wrote in the Washington Post that, on Iran, he supports “keeping all options on the table, including the use of military force.”