PARIS (Reuters) – Iran would need another three to eight years to make a nuclear bomb, the head of the U.N. nuclear watchdog said in an interview published on Monday, warning against any rush to use force to curb its nuclear ambitions. Mohamed ElBaradei, head of the International Atomic Energy Agency (IAEA), told France’s Le Monde newspaper there was plenty of time for diplomacy, sanctions, dialogue and incentives to bear fruit. Vice President Dick Cheney said on Sunday the world would not stand by and let Iran develop a nuclear weapon, and Washington has not ruled out an attack. Iran says its nuclear plans are peaceful and denies it wants to make an atomic bomb.