New Delhi, March 12 -- Iran targeted the world's busiest international airport Wednesday and attacked commercial ships as U.S. and Israeli strikes rocked Tehran, while the United Nations' most powerful body demanded a halt to the Islamic Republic's strikes on its Gulf neighbors that threaten global oil supplies.

The latest attacks marked an escalation in Iran's campaign aimed at generating enough global economic pain to pressure the United States and Israel to end the war that started 12 days ago. But there were no signs that the conflict was subsiding.

On Thursday, an Iranian attack sparked a major fire on Bahrain's Muharraq Island, home to the island kingdom's international airport. Authorities urged people to stay indoors and close w...