Iran’s new President has taken the oath of office defiantly vowing not to bow to intimidation as his country faces a mounting crisis over its nuclear ambitions. Mahmoud Ahmadinejad who is the former mayor of Tehran is a religious conservative who unexpectedly won a landslide victory in June. The 48 year old has called for a renewal of Islamic values and promised to fight corruption and promote justice for all Iranian citizens. Ahmadinejad replaces reformist cleric Mohammed Khatami. Diplomats expect the new leader to adopt a much tougher approach in the nuclear negotiations.