Donald Trump appeared to stumble and slur his way through a scripted address, including failing to say the word "tolerated", in his response to Iran's attacks on two US bases in Iraq.
He told Iran that its "campaign of terror, murder, mayhem, will not be 'tolerited' any longer".
He also suggested former president Barack Obama's administration paid for the missiles used by Iran in last night's attack.
Mr Trump claimed that "the missiles fired at us last night were paid for by the funds made available by the last administration" through the unfreezing of Iranian funds and lifting of sanctions against the country in exchange for curbing its nuclear capacity.
The Trump administration withdrew from that agreement in 2018, igniting tensions between the two countries.
Flanked by military officials and Vice President Mike Pence, the president delivered a relatively swift address claiming that Iran was "standing down" and reported no American or Iraqi casualties and only "minimal damage" following last night's missile attacks.
