India, March 3 -- Iran and allied armed groups fired missiles at Israel, Arab states and US military targets around the region on Monday, while Israel and the United States pounded Iran as the war expanded to several fronts.

Kuwait mistakenly shot down three American warplanes over its skies. The intensity of the attacks, the killing of Iranian Supreme Leader Ayatollah Ali Khamenei, and the lack of any apparent exit plan indicated the conflict would not end anytime soon.

It was already having far-reaching consequences: Safe havens in the Mideast like Dubai have seen incoming fire; hundreds of thousands of airline passengers are stranded around the globe; oil prices shot up; and U.S. allies pledged to help stop Iranian missiles and drone...