"As of this moment, I am convinced he's made the decision," Biden said during remarks at the White House.
Biden had considered traveling to Delaware, as he typically does, but decided to remain in Washington.
Throughout recent days, the Biden administration has publicly disclosed several intelligence details on Russian movements -- a marked shift in how US national security officials typically operate.
If Russia pursues its plans, it will be responsible for a catastrophic and needless war of choice," he added.
The President's assertion on Friday that he's "convinced" Putin has "made the decision" to invade Ukraine is a significant change in his position.
Questioned on why he believed Putin is considering diplomacy at all, Biden said only: "We have a significant intelligence capability.".
Biden said Friday that Russian misinformation is building up to a false justification for Putin to invade Ukraine, accusing Russia of ceasefire violations in the "rapidly escalating crisis.". »