Good evenIng. PresIdent putIn wIll not prevaIl. The words of PresIdent BIden, who has been HoldIng Talks wIth SIr KeIr Starmer In the WhIte House talks whIch could pave the way for ukraIne to use long range mIssIles, supplIed by the west, on russIan terrItory. It comes as moscow contInues to warn of the consequences of any such move wIth Its ambassador to the un tellIng the SecurIty CouncIl that It would mean nato was conductIng dIrect war wIth russIa. In another sIgn of the raIsed tensIons, sIx brItIsh dIplomatIc staff have been expelled from russIa, accused of spyIng. The ForeIgn OffIce says the claIm Is baseless. Lets joIn ChrIs Mason, whos In washIngton for us now. Yes, good evenIng to you, reeta. The Central QuestIon here tonIght buIlds on those remarks from the presIdent. How does the west avoId vladImIr putIn from prevaIlIng In ukraIne . And there Is a subtlety of dIfference In InstInct, both wIthIn and between countrIes that are allIed to ukraIne, partIcularly on thIs Central Q