An international human rights organisation is urging the US to reconsider its decision to send cluster bombs to Ukraine.
Amnesty International says the explosives have caused "untold harm to civilians across the world", sometimes even decades after a conflict has ended.
According to the BBC cluster munitions are a method of dispersing large numbers of tiny bomblets from a rocket, missile or artillery shell that scatters them in mid-flight over a wide area. From a military perspective, they can be horribly effective when used against dug-in ground troops in trenches and fortified positions, rendering large areas too dangerous to move around in until carefully cleared.
The weapons are banned in more than 100 countries because of the danger they pose to civilians.
