US President Donald Trump speaks to reporters before boarding Air Force One as he departs Joint Base Andrews in Maryland on March 13, 2026. (Photo: AFP)

U.S. President Donald Trump said on Friday that the U.S. military campaign in Iran will last "as long as necessary."

When asked by reporters how long the war will last, he said: "I can't tell you that."

"I won't give you a time, but we are way ahead of schedule," he added.