On Thursday's broadcast of CNN's "Situation Room," White House National Security Council Coordinator for Strategic Communications John Kirby reacted to U.S. troops facing further attacks from Iranian proxy groups in the wake of the U.S. strikes on Wednesday by stating that it's "not uncommon after we take a retaliatory strike for there to be some sort of secondary set of strikes by these proxy groups. We haven't seen them be very effective. That doesn't mean we're taking it lightly or we're undermining it at all. Obviously, we'll continue to do what we have to do to protect our troops in Iraq and Syria."