WASHINGTON — Democrats and Republicans on Capitol Hill offered varying degrees of support for the airstrikes on Friday night against Syria, but lawmakers almost universally pressed the administration for a broader strategy in confronting the war-torn region.

Top administration officials, including Vice President Mike Pence and Defense Secretary Jim Mattis, gave advance notice on Friday to key congressional leaders from both parties about their decision to punish President Bashar al-Assad for a suspected chemical attack near Damascus last weekend that killed more than 40 people.

But as missiles and bombs hit research, storage and military facilities in Syria shortly after 4 a.m. local time on Saturday, even advocates of more aggressive intervention said that the attacks would mean little in the long run without a clear, comprehensive approach.

Comments by President Trump in recent days — at first calling for the removal of American troops from Syria, and then, on Friday, offering a commitment to preventing further chemical attacks — have only served to further confuse lawmakers.