The Biden administration will for the first time send controversial armor-piercing munitions containing depleted uranium to Ukraine, according to a document seen by Reuters and separately confirmed by two U.S. officials.

The rounds, which could help destroy Russian tanks, are part of a new military aid package for Ukraine set to be unveiled in the next week. The munitions can be fired from U.S. Abrams tanks that, according to a person familiar with the matter, are expected be delivered to Ukraine in the coming weeks.

One of the officials said that the coming aid package will be worth between $240 million and $375 million depending on what is included.