In December, the Kremlin published two draft treaties laying out its demands as it massed troops and weaponry around Ukraine.
Chief among them were "security guarantees" that NATO bar Ukraine from membership.
The western military alliance pull back its forces from Eastern European member states.
Laying out his false pretext for an invasion by questioning Ukraine's legitimacy as a country.
Putin also signaled he sees the current democratically elected government in Ukraine as criminal.
Russia had been holding huge joint military exercises within Belarus, which shares a border with Ukraine.
In the weeks leading up to the invasion -- while scoffing at concerns they would be used for an invasion.
Putin recognized two Moscow-backed rebel regions within eastern Ukraine as independent states.
The two self-proclaimed People's Republics of Donetsk and Luhansk want to control the whole of eastern Ukraine's Donbas region.
Biden announced sanctions against Russian elites and their families and four financial institutions on Thursday.
As well as export controls that block key materials like semiconductors for Russia's defense and high-tech industries.
At least 137 people have been killed so far and several hundred have been injured, according to Ukrainian President Volodymyr Zelenskyy.