President Joe Biden's administration has taken a cruel weaponthe cluster bomb"off the shelf and sent it to Ukraine to be used in the war against Russia. Prior to being transferred to Ukraine, cluster bombs made in the United States were used by Saudi Arabia as recently as last year to devastating effect in its war in Yemen. Cluster bombs are large bombs that contain dozens or even hundreds of smaller bombs, or "bomblets." Cluster bombs are designed to scatter the bomblets over a wide area upon detonation. Inevitably, not all of the smaller, scattered bombs explode on impact. The bomblets lie on or below the surface of the ground, potentially for years or even decades, waiting to be detonated when touched. They are, in effect, land mines. The U.S. has used cluster bombs in large-scale military operations since World War II, including its invasions of Afghanistan and Iraq. The bomblets that the U.S. used in those invasions were the same size and color as the packaged meals"humanitarian daily rations, or HDRs"that the U.S. also air-dropped for civilians. Human rights groups warned at the time against using cluster bombs, pointing to a similar problem that occurred when the U.S. used them in the Balkan Wars in the 1990s and children mistook the bomblets for toys"but the Pentagon used them anyway. More than 120 countries have signed the 2008 Convention on Cluster Munitions. The U.S. remains in the minority of countries that refuses to sign the Convention on Cluster Munitions, along with Ukraine and Russia.