But Trump has signaled to his advisers that, ideally, he wants all troops out within six months.
Images released by the Syrian Civil Defense White Helmets, a volunteer organization, show children lying on the ground motionless and foaming at the mouth. The Assad government, in a statement posted on the state-run news agency SANA, denied responsibility.
Trump was briefed about the attack by his chief of staff, John Kelly, officials said. Trump’s homeland security adviser, Thomas Bossert, noted the timing of the suspected chemical attack — almost a year to the day of the U.S. missile strikes.
“This isn’t just the United States. This is one of those issues on which every nation, all peoples, have all agreed and have agreed since World War II, it’s an unacceptable practice,” Bossert said.
Asked about the potential for an American missile strike in response, Bossert said: “I wouldn’t take anything off the table. These are horrible photos. We’re looking into the attack at this point.”
Trump was to meet with his senior military leadership on Monday, the same day his new national security adviser, John Bolton, assumes his post. Bolton has previously advocated significant airstrikes against Syria.