WASHINGTON (AP) - President Barack Obama is urging Congress to resist new sanctions against Iran because current agreements have a good chance to rein in that country's nuclear ambitions. Obama told reporters Friday that Iran has agreed to actions that will let other nations determine whether it is trying to weaponize nuclear materials. Iran says the materials are for peaceful uses only. The president said he would support tougher sanctions later if Iran violates the agreement. He said it's politically popular for some lawmakers to look tough against Iran. Obama urged Congress to hold off and give current diplomacy a chance to work. Israel says the current agreements are too lenient with Iran.