Secretary of State John Kerry faces a potentially hostile reception Wednesday when he urges skeptical US lawmakers not to proceed with proposed new sanctions aimed at halting Iran’s nuclear drive

Secretary of State John Kerry faces a potentially hostile reception Wednesday when he urges skeptical US lawmakers not to proceed with proposed new sanctions aimed at halting Iran's nuclear drive.
  
Senate Republicans and Democrats bristled when the White House warned Tuesday that such action could trigger a "march to war."
 
The administration's remarks Tuesday marked a significant toughening of President Barack Obama's stance towards Congress on sanctions as Washington prepares to resume high-stakes nuclear diplomacy with Iran later this month.

Key senators from both US parties, some responding to Israel's savaging of the proposed agreement, are proposing stiffer sanctions or may curtail Obama's power to ease current measures. But the White House said any new sanctions could scupper the diplomatic process and leave little option but the use of military force against Iran.
  
"The American people do not want a march to war," White House spokesman Jay Carney told reporters, saying US citizens "justifiably and understandably prefer a peaceful solution that prevents Iran from obtaining a nuclear weapon." "This agreement, if it's achieved, has the potential to do that. The alternative is military action," Carney added.
  
Republican Senator Mark Kirk maintained that sanctions are the best way to avoid war. "The American people should not be forced to choose between military action and a bad deal that accepts a nuclear Iran," he said.
  
White House aides, however, privately say that once war-weary Americans understand the alternative to a deal with Iran means another Middle East conflict, they will warm to Obama's approach.

Fresh from the Geneva talks, Kerry will take the administration's position directly to the Senate Banking Committee, which is mulling a new sanctions package. "The secretary will be clear that putting new sanctions in place would be a mistake," State Department spokeswoman Jen Psaki said. "What we are asking for right now is a pause, a temporary pause in sanctions," she told reporters. "We are not rolling them back."
  
Obama spoke Tuesday with British Prime Minister David Cameron about recent proposals in Geneva and "discussed their expectations for the next round of talks," the White House said.