U.S. officials said that an initial batch of the 31 M1 Abrams tanks promised to Ukraine by the Biden administration had been delivered, months ahead of estimates.
Putin's primary hope is the west gets 'bored' of supporting Ukraine or somehow runs out of equipment. The US isn't running out of Abrams any time soon. The US produced more than it was using for the last two decades, both to build up a stockpile for situations like this, and to keep the manufacturing lines and employees so production can be scaled-up if needed.