text:  Well, you heard him give a ringing endorsement of the principles of the alliance from the very same room, the Mellon Auditorium, where the treaty was signed 75 years ago. In terms of style, you're right. Biden has been under a microscope since his disastrous debate with former President Donald Trump. This speech last night was from a teleprompter. He did deliver it clearly and firmly. In terms of substance, it was music to the ears of NATO leaders today.