a strike on lutsk overnight, the devastation is already terrible. the hope will be that public warnings may dissuade moscow, though, from taking action which could bring even more suffering. gordon corera, bbc news. the us and its western allies are stripping russia of its routine trade benefits — putting further economic pressure on the kremlin over its invasion of ukraine. joe biden has also announced a ban on russian seafood, alcohol and diamonds. our state department correspondent barbara—plett usher is outside the white house. barbara, i have lost count of how many different rounds of sanctions we have had now, but this suspension of normal trading relations, what impact is not going to have? yes. impact is not going to have? yes, there have _ impact is not going to have? yes, there have been _ impact is not going to have? yes, there have been a _ impact is not going to have? yes, there have been a lot _ impact is not going to have? yes, there have been a lot of- impact is not going to have? yes there have been a lot of sanctions. what that says is that mr biden has revoked russia's preferential trade status, which is equal trade treatment that russia could expect