Pro-sanctions U.S. lawmakers will introduce new Iran bill soon

U.S. Treasury Secretary Jack Lew (R) arrives to brief members of the U.S. Senate on talks with Iran during a closed-door meeting at the Capitol in Washington, December 11, 2013. REUTERS/Jonathan Ernst

WASHINGTON (Reuters) - U.S. senators will introduce legislation to impose new sanctions on Iran as soon as this week, Senate aides said on Wednesday, despite the Obama administration's insistence that such a measure would violate terms of an interim agreement to curb Tehran's nuclear program.

Iran's foreign minister has also said a new sanctions law would kill the agreement. In the interim agreement, Tehran agreed to limit uranium enrichment in return for an easing of international sanctions.