The senator is headed back to the drawing board with her military sex assault bill.
"We will not be able to stay” without security agreement, the Defense secretary said.
"Powerful sanctions and a credible military threat" are also needed, he said.
“I believe the threat has become greater, not lesser,” Rep. Mike McCaul said.
“If the Iranians renege, if they cheat, then the deal is off," lawmaker said.
"I wouldn’t begin the process by conceding anything on enrichment,” Schiff said.
This news follows a short-term deal meant to slow Iran's nuclear program.
Obama said the chances of a permanent nuke deal with Iran are at best no more than even odds.
The report suggests Pentagon officials may have misled lawmakers on the 2011 purchase of helicopters.
The defense secretary arrived despite tensions with the U.S.-backed Afghan regime.