The Pentagon is unlikely to use all of the billions of dollars authorized by Congress to arm Ukraine before President Joe Biden leaves office, according to two US officials and three defense officials.

American officials are acknowledging that the U.S. won’t be able to spend all of the money authorized to transfer arms to Kyiv by Jan. 20.

As Kyiv braces for the potential of difficult talks with Russia, Biden hopes providing land mines and allowing longer-range attacks will strengthen its hand.