solemn anniversary with a moment of silence and other ceremonies. in washington, d.c., president biden and the first lady visited the world war ii memorial to pay their respects. in a proclamation marking pearl harbor remembrance day, the president encouraged all americans to reflect on the courage shown by the brave warriors that day. the news continues. let's hand it over to michael smerconish and cnn tonight. >> i'm michael smerconish. this is cnn tonight. president biden put vladimir putin on notice there will be consequences if russia decides to invade ukraine. but was he able to dial putin back today from the brink of war in their two-hour video summit? that's the looming question tonight. it certainly looks like the brink of war. russia's been amassing tens of thousands of troops on its border with ukraine, potentially as many as 175,000, along with weapons and tanks and other military equipment. all caught on satellite cam. could it all be just a bluff?