Several US allies have expressed concern over Washington's decision to supply Ukraine with cluster munitions, BBC reports.
US confirmed Friday it was sending controversial weapons to Ukraine, although President Joe Biden said it was a "very difficult decision." In response, the United Kingdom, Canada, New Zealand and Spain stated they were against the use of these weapons.

Cluster bombs are banned in over 100 countries because they pose a danger to civilians. They fire multiple smaller bombs that kill indiscriminately over a large area. In addition, unexploded bombs can remain on the ground for years and then randomly explode.