ABU DHABI, United Arab Emirates, and RIYADH, Saudi Arabia — President Trump visited a mosque on Thursday — his first publicly known visit to a Muslim house of worship during his time in office.

President Donald Trump is to visit the main U.S. military base in the Middle East even as he uses his four-day visit to Gulf states to reject the “interventionism” of America’s past in the region

After a morning meeting with top U.S. and Qatari officials and American defense and aerospace business leaders, Trump heads to Al-Udeid Air Base, a U.S. installation at the center of American involvement in the Middle East. There, he will address troops and is expected to view a demonstration of American air capability.