Geneva Talks U.S. Won't Ease Pressure Until Iran Takes Significant Steps to Halt Nuclear Program

In letter to Obama, 10 senators suggest that if Tehran suspends uranium enrichment, Washington should suspend implementation of new sanctions; Negotiations about Iran's nuclear program to start in Geneva Tuesday.

GENEVA - U.S. pressure on Iran will continue until the latter has implemented significant steps to halt its nuclear program, senior officials in the Obama administration stressed Monday, on the eve of talks between world powers and the Islamic Republic in Geneva.