Cluster bombs were also used in the 1999 war in Kosovo . New international law bans use , production , and stockpiling of cluster munitions . The bombs break apart in flight scattering hundreds of smaller bomblets . UNESCO describes bombs as a ` ` persistent humanitarian threat '' 104 countries have agreed to a treaty banning all cluster munitions .
New international law bans use , production , and stockpiling of cluster munitions . The bombs break apart in flight scattering hundreds of smaller bomblets . UNESCO describes bombs as a ` ` persistent humanitarian threat '' 104 countries have agreed to a treaty banning all cluster munitions .