 Good morning. President Biden made some untimely verbal flubs with his political future in doubt. White House correspondent Greg Clugston reports. Facing intense scrutiny over his advanced age and mental acuity, the president made a gaffe at the NATO summit when he introduced Ukrainian President Zelensky. Ladies and gentlemen, President Putin. Later, at a high-stakes press conference, Mr. Biden mistakenly identified his own vice president, Kamala Harris.