The Biden administration on Friday approved an $800 million weapons package for Ukraine which includes controversial cluster bombs, armored vehicles and air defense missiles.

National security adviser Jake Sullivan responded to humanitarian concerns about the cluster bombs by emphasizing the need to provide Kyiv with artillery and that Ukraine has already been targeted by Russia’s cluster bombs.

“We recognize that cluster munitions created risk of civilian harm from unexploded ordnance,” Sullivan said during a White House press briefing. “This is why we deferred the decision for as long as we could, but there is also a massive risk of civilian harm if Russian troops and tanks roll over Ukrainian positions and take more Ukrainian territory and subjugate more Ukrainian civilians because Ukraine does not have enough artillery.”