Early in the war, the Biden administration alleged that Russia was using cluster bombs and claimed this would be a “war crime” if true. Now Biden is trying to counter critics by claiming that U.S. cluster bombs, with an alleged dud rate of 2.5%, have a lower dud rate than Russia’s bombs.
No joke necessary.
Cluster munitions have been illegal internationally since 2008 with the passage of the “Convention on Cluster Munitions”. The US has not ratified that they will follow the conventions, but per UN guidelines, using and deploying cluster munitions are a war crime.
https://en.m.wikipedia.org/wiki/Convention_on_Cluster_Munitions