eiffel tower in paris also bathed in blue and yellow, and along with the famed sydney opera house illuminated in tribute to the people of ukraine. in a moment we will talk to white house nationalr jake sullivan about the u.s. involvement in the conflict and how long this war could last. but we juan to start with nbc's richard engel who is in ukraine where a moment of silence was observed this morning one year later. richard, good morning. >> reporter: good morning, savannah. everyone in this country remembers exactly where they were at 5:00 in this country a year ago when russian troops, which had sworn that they were not going to invade ukraine, russia claimed it was merely carrying out military exercises, and then russia entered this country, launched its biggest invasion, the biggest invasion in europe since world war ii. and today, president zelenskyy thanked his people for their resolve and predicted that this year ukraine would win the war. ukrainians this morning, observing a moment of silence for a war they were widely expected to lose, but instead, are winning. it was 5:00 a.m. a year ago today, when russia invaded ukraine. in the biggest military campaign in europe s