New Iran sanctions would risk war, White House warns

[YahooNews]

The White House has warned US lawmakers that tightening sanctions on Iran could derail a diplomatic drive for a nuclear deal with Iran, boxing America into a "march to war." The 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. The US president has vowed he will not allow Tehran's leaders to develop an atomic weapon, but last week's negotiations in Geneva between Iran and six world powers failed to reach an interim deal to halt its program. Fresh from the talks, Secretary of State John Kerry heads to Capitol Hill on Wednesday to make the case for continued diplomacy.