Israel has promised to retaliate for Iran’s massive missile attack last week. How it does so involve great risk, and could have major repercussions for the archenemies, the Middle East and the world.

The conflict between Israel and Hezbollah, as well as its sponsors in Tehran, appears to be spiraling completely out of control. An all-out war is looming with Israel, whose government is flush with victory and triumphalism and in little mood to suspend its attacks as Iran and Hezbollah vow to fight on.