In Syria, the strikes killed 23 people who had been guarding the targeted locations, said Rami Abdulrahman, director of the Syrian Observatory for Human Rights, an organization that reports on war in Syria.
The White House said the United States had informed Iraq ahead of strikes.
Baghdad later accused the United States of deception, saying a U.S. claim of coordination with the Iraqi authorities was "unfounded".
The Syrian foreign ministry said the United States was fueling conflict in the region in a "very dangerous way".
Britain called the United States its "steadfast" ally and said it supports Washington's right to respond to attacks.
Persons:
Joe Biden, Andrew Caballero, Reynolds, Joe Biden's, Nasser Kanaani, Rami Abdulrahman, Douglas, Sims, Chip Somodevilla, General Douglas Sims, Biden, Lloyd Austin, Austin, Ebrahim Raisi, Radek Sikorski
Organizations:
Air Force, Joint Base Andrews, AFP, Getty, United, Revolutionary Guard, U.S, Syrian, Human Rights, Chiefs, Capitol Visitors Center, Joint Staff, Pentagon, U.S . Defense
Locations:
Maryland, United States, Iraq, Syria, U.S, Iran, Israel, Gen, Washington ,, Tehran, Lebanon, Yemen, Iraqi, Baghdad, Washington, Britain, Polish, Brussels