Consensus grows, but questions remain on how to deal with Iran

A growing number of countries are backing moves to contain Iran's nuclear ambitions. But with military action all but ruled out and the difficulty of imposing effective sanctions, their tools appear few and flawed.

The main threat for now is referral to the Security Council. But &to=' target=_blank>Iran was defiant Friday, vowing to further limit international monitoring of its nuclear activities if hauled before the United Nations.

It was left to some of Tehran's main critics to tone down the confrontation, with officials from France and Germany saying it was too early to speak of sanctions.