The US has announced it is sending cluster bombs as part of its latest $800 million military support package to Ukraine, and a controversy has flared among allies. Germany has already stated that it opposes the supply of this type of weapon, which is prohibited by a convention signed in 2008 and supported by more than 120 countries. The Pentagon has attempted to assuage criticism and concerns by ensuring that it delivers munitions with a “failure rate” (“failure rate”) of less than 3%. This means that of the smaller explosives built into the main bomb, which are scattered after the explosion, only a small part runs the risk of not exploding and being buried, becoming a threat to civilians for decades. In support of the decision, the United States recalls that Russia is already using bombs of this type in Ukraine. However, the death toll from a Russian attack on Lviv on Thursday in western Ukraine has risen to 10 killed and 45 wounded.