Asked if an attack would trigger all-out war in the Middle East, Trump said, “I guess you could always say there’s always a risk.
“You know when there’s war, there’s a risk in anything, both good and bad.”
Trump was circumspect on whether a US attack would bring down the Islamic republic, a sworn enemy of the United States and Israel.
Authorities last month killed thousands of people as they crushed mass protests in the biggest threat to the ruling clerics since the 1979 Islamic revolution toppled the pro-Western shah.
“Nobody knows. There might be and there might not be,” Trump said of regime change.
Trump in his first term ripped up a nuclear deal negotiated by his predecessor Barack Obama in which Iran agreed to strict limits on uranium enrichment.
