President Donald Trump’s surprise trip to Iraq may have quieted criticism at home that he had yet to visit troops in a combat zone, but it has infuriated Iraqi politicians who on Thursday demanded the withdrawal of U.S. forces.

“Arrogant” and “a violation of national sovereignty” were but a few examples of the disapproval emanating from Baghdad following Trump’s meeting Wednesday with U.S. servicemen and women at the al-Asad Airbase.

Trips by U.S. presidents to conflict zones are typically shrouded in secrecy and subject to strict security measures, and Trump’s was no exception. Few in Iraq or elsewhere knew the U.S. president was in the country until minutes before he left.