US Republican presidential candidate Mitt Romney on Monday repeated his claim that US President Barack Obama was trying to place "daylight" between the US and Israel.

In a major foreign policy speech, titled "The Mantle of Leadership", in Lexington, Virginia, Romney said Obama "explicitly stated that his goal was to place daylight between US and Israel. This is a dangerous situation that has set back peace in the middle east and emboldened our enemies."

Romney also warned that Iran is "closer than ever to nuclear weapons capability."