ABU DHABI, United Arab Emirates (AP) — President Donald Trump's national security adviser warned Iran on Wednesday that any attacks in the Persian Gulf will draw a "very strong response" from the U.S., taking a hard-line approach with Tehran after his boss only two days earlier said America wasn't "looking to hurt Iran at all."

John Bolton's comments are the latest amid heightened tensions between Washington and Tehran that have been playing out in the Middle East.

Bolton spoke to journalists in Abu Dhabi, the capital of the United Arab Emirates, which only days earlier saw former Defense Secr...