The president did not elaborate, but added: “I don’t think we need a wider war in the Middle East.”
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US President Joe Biden says he has decided how the US will respond to a drone strike that killed three American troops in Jordan.
Speaking as he left the White House for fundraisers in Florida, Mr Biden added that “we don’t need a wider war” in the Middle East.
An Iran-backed militia group has claimed responsibility for the attack at a US military base.
Dozens more were injured in the strike near the Syrian border.
Mr Biden did not detail exactly what the US action might be, but the White House has promised a “very consequential response”.
US officials have been trying to avoid a spiralling conflict in the Middle East.
But Sunday marked the first time US soldiers were killed by enemy fire in the area since Hamas’s 7 October attack on Israel.