An Indian fisherman aboard a boat fired on by the United States Navy in the Persian Gulf has told officials the crew received no warning first, India’s ambassador to the United Arab Emirates said Tuesday. The Navy said it resorted to lethal force on Monday only after issuing warnings. One Indian was killed, and three were seriously wounded. The Navy said the boat rapidly approached the refueling ship Rappahannock about 10 miles off Jebel Ali, Dubai, and disregarded warnings. The Indian ambassador, M. K. Lokesh, said a survivor “says there was no warning.”