National Security Advisor Jake Sullivan spoke about the ongoing war in Ukraine at the economic forum in Davos and noted that "Putin failed to properly assess the Ukrainian people".

"Let me take you back two years ago, to this day, when Putin had amassed 180,000 soldiers on Ukraine’s border, surrounding the country on three sides. He expected a quick victory, that he could send a column of tanks to Kyiv and topple the democratically elected government of Ukraine; that he could weaken NATO and restore Russia’s sphere of influence. But he underestimated the people of Ukraine. For two years, with support from a coalition of more than 50 partners led by the United States, the people of Ukraine have remained unflinching against an adversary with an economy ten times larger, a population three times bigger, and a military once ranked as the second best in the world. Two years later, Putin has not only failed in his imperialist quest to subjugate Ukraine; his invasion has strengthened Ukrainian sovereignty - the very sovereignty he sought to erase - and bolstered the very NATO resolve he sought to weaken. In fact, while he sought to diminish NATO, his action grew our ranks instead. 
Brave Ukrainian soldiers have retaken more than half of the territory that Russia occupied from the start of this conflict. They’ve repulsed Russia’s attempts at an offensive last winter, and they’re repulsing one this winter. They’ve severely degraded Russia’s Black Sea Fleet, dramatically increasing Ukraine’s exports through the Black Sea. They’ve imposed severe costs on the Russian military, destroying major capabilities built up over decades. And amid all of this, Ukraine has made economic reforms, strengthened its own defense industrial base, and accelerated its integration with the West. Of course, the fight is not over. Russia has laid dense minefields across the frontlines, making it harder for Ukraine to make major territorial gains. With China’s help, Putin is mobilizing Russia’s defense industrial base, putting the country’s economy on a wartime footing. And Russia is seeking more weapons from both North Korea and Iran, which violates multiple U.N. Security Council resolutions that Moscow itself voted to put in place. But as President Zelenskyy has discussed with President Biden, and as Secretary Blinken and I discussed with him earlier today, the people of Ukraine are steeled for the struggle ahead. And the United States and our partners will continue to stand with them. 
We’re expanding training for Ukrainian troops. We’re working to secure bipartisan support for the necessary resources to supply Ukraine with the weapons it needs. We’re ramping up our own defense industrial base, while denying Russia access to critical inputs it needs to do the same.
And we’re also innovating -- and this is a critical point -- working with our partners, and especially with the private sector, to help Ukraine solve the key technological challenges of an evolving battlefield, like electronic warfare, drones, and de-mining. Together, we will build on our sanctions to ensure that even as unsustainable war spending masks underlying weakness, the economic costs for Russia continue to mount.

And we will keep supporting Ukraine’s diplomatic efforts to secure a just and lasting peace that protects Ukraine’s sovereignty and territorial integrity in line with the principles of the U.N. Charter. Because we’ve seen time and time again what happens when aggressors are allowed to take a neighbor’s territory by force and don’t pay a price: They keep going", - said National Security Advisor Jake Sullivan.