Cluster Bombs | What You Need to Know About Ukraine's Controversial New Weapon Summary: Cluster munitions are bombs that open in the air, releasing smaller bomblets across a wider area, targeting multiple objectives simultaneously. More than 120 countries have banned the use of cluster munitions due to the risks posed to civilians from unexploded bomblets. The United States has been providing cluster bombs to Ukraine to support its ground troops in countering heavily fortified Russian positions. The Convention on Cluster Munitions, an international treaty, prohibits the use, production, transfer, and stockpiling of cluster bombs. The use of c...