Regardless of what you think about Ryan he is right about this and has been saying it for a long time.
"Indicators and warnings that Ukraine would be attacked were reaching Western capitals from July 2021, with confidence hardening from September. By December the US and UK intelligence communities were sufficiently confident to make their conclusions public, but it was not until January 2022 that serious efforts were made to try to equip Ukraine, by which time the range of systems that could be provided with enough time left to offer training on them was narrow."