China and Russia would seriously oppose an attack on iran which would destabilize the mideast for years. The only option for America and Israel is to goad Iran into taking the first aggressive actions. You can bet that Iran has received some counseling from Russia and China not to be sucked into this game and everything will be OK.
Israeli soldier collapses, dies from heatstroke during visit to Jerusalem's Old City (Haaretz)
from the article: Iran's game of chicken regarding oil production