*Putin says Russia "will respond" if UK supplies depleted uranium shells to Ukraine.*

I can't imagine what sort of "response" Russia could actually make? Try to destroy the tanks that would fire these shells? The Putin forces will try their best to do that anyway.

Ukraine should say "no thanks" to these shells, since using them would pollute Ukrainian territory with Dirty Uranium fallout for a long time.

It causes various sorts of diseases for anyone who breathes it in.