President Joe Biden’s decision to give Ukraine cluster munitions comes just as Kyiv faces “risk of failure” in their much-anticipated counteroffensive, according to Republican lawmakers who urge further weapons aid.

The cluster munitions announcement is the latest example of Biden giving the green light to a weapons transfer after months of rebuffing Ukrainian requests. Yet that long-awaited shift gave immediate rise to renewed calls for Biden to send long-range missiles to Ukraine, which is using such munitions to strike Russian supply lines and arms depots.