US Rejects Israel Calls for Tougher Moves on Iran

Tension on that "red line" that might prompt military action

The Obama administration rejected Israeli calls for clearer U.S. "red lines" that Iran can't pass without risking military conflict, in a sign of continuing tensions between Prime Minister Benjamin Netanyahu and President Barack Obama over Tehran's nuclear advances.

The divisions come against the backdrop of November's U.S. presidential elections, in which Mr. Obama's Republican opponent, Mitt Romney, has tried to paint the Democratic president as weak in his support for Israel. The U.S.-Israeli exchange also comes as Washington tries to convince its ally not to launch military strikes against Iran.