U.S. National Security Advisor Jake Sullivan answers questions during the daily briefing at the White House on November 13, 2023 in Washington, DC. "We intend to take additional strikes and additional action to continue to send a clear message that the United States will respond when our forces are attacked or our people are killed." "What I will say is that the president is determined to respond forcefully to attacks on our people. A day after those strikes, the U.S. and Britain led attacks against 36 Houthi targets in Yemen, in a second effort to further destabilize Iran-backed groups. When asked how worried he is that Iranian-backed forces could again retaliate against U.S. forces, Sullivan responded: "That's always a risk...if we see more attacks, you'll see more responses."

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Persons: Jake Sullivan, Sullivan, we've, I'm, Kristen Welker's, Biden Organizations: National, White House, NBC, Press, U.S ., Revolutionary Guard, U.S, CBS Locations: Washington , DC, United States, Iran, U.S, Iraq, Syria, Jordan, Yemen, Red, Israel, Iranian