The White House has approved providing Ukraine with cluster munitions and is set to announce a drawdown of the weapons from the Defense Department on Friday. The decision comes amid concerns about the pace of Kyiv’s counteroffensive and dwindling Western stocks of conventional artillery. More than 120 nations have joined a convention banning the controversial weapons, which release smaller submunitions that can remain unexploded and endanger civilians years after a conflict has ended. The United States, Ukraine and Russia — which has allegedly used cluster munitions extensively in Ukraine — are not parties to the convention.