President Biden privately pointed the finger at former President Barack Obama for failures that led to Russia’s 2022 invasion of Ukraine, the largest conflict in Europe since World War II, a new book claims.

“They f–ked up in 2014,” Biden, Obama’s former vice president and onetime point person on Ukraine, vented to a friend, according to Bob Woodward’s upcoming book, “War,” previewed by CNN.

“That’s why we are here,” the 81-year-old added. “We f–ked it up. Barack never took Putin seriously.”