 You're listening to NewsHour from the BBC. I'm Paul Henley. The US Secretary of State, Antony Blinken, has said NATO allies have begun to transfer F-16 fighter jets to Ukraine, seen as vital to help counter Russia's control of the skies there. Earlier, Norway said it would also provide six of its F-16s. As we speak, the transfer of F-16 jets is underway, coming from Denmark, coming from the Netherlands...