The US has confirmed it will provide Ukraine with the key Patriot missile defence system to help its fight against Russia.
Patriot missile systems essentially act as a shield against incoming jets, short-range ballistic missiles and cruise missiles.
The transfer is a significant step for the Ukrainian defence and will be the first-ever handover of such a system to Ukraine, but one expert claimed it will make only a "minor difference to the number of missiles that will get through the Ukrainian's air defence."
