Ukrainian Foreign Minister Dmytro Kuleba defended his country's call for cluster munitions, saying he realizes the ammunition is controversial but added Ukraine is not a party to the convention prohibiting them and thus could legally use them. Kuleba spoke to reporters on the sidelines of the Munich Security Conference on February 18. The Convention on Cluster Munitions is an international treaty prohibiting the use, transfer, production, and stockpiling of cluster bombs, a type of weapon that scatters submunitions or "bomblets" over an area. Neither Ukraine nor Russia has signed the agreement. Kuleba said Ukraine has evidence Russia is using cluster ammunition.