 Top stories we're working on for you right now on WTOP. A verbal flub on an international stage. President Biden introduces Ukraine's president as President Putin ahead of a high-stakes news conference now scheduled for 7 o'clock tonight. D.C. is cutting the ribbon on its first office-to-apartment building in downtown. And we're getting a look at what it will be like to ride on Maryland's Purple Line. It's not going to open until 2027. Keep it here for full details in the minutes ahead. It's 648.