Helping Ukraine is “a relatively modest investment with significant geopolitical returns,” the CIA director wrote.

Western allies must continue providing assistance to Ukraine in its war with Russia this year, or risk a mistake “of historic proportions,” CIA Director William Burns wrote in a column published Tuesday.

Burns laid out his case in a Foreign Affairs column, noting that less than 5 percent of the U.S. defense budget — “a relatively modest investment with significant geopolitical returns” — is all that Washington sends to Kyiv.

If an opportunity for serious negotiations to end the war emerges, he wrote, providing arms to Ukraine will put it in a stronger bargaining position. Ukraine’s military would also be able to continue fending off Russian troops while rebuilding its infrastructure, while Moscow spends massive amounts of money to keep the war going, Burns added.

“For the United States to walk away from the conflict at this crucial moment and cut off support to Ukraine would be an own goal of historic proportions,” Burns wrote, referencing a soccer term for scoring a goal for the rival team by putting the ball into a player’s own net.