Latest row comes on eve of critical vote in Stormont assembly on transfer of justice powers from London to BelfastA meeting between the Ulster Unionists and Northern Ireland's deputy first minister aimed at securing the party's support for the devolution of policing and justice broke down in acrimony this evening.The encounter between Martin McGuinness and a UUP delegation lasted all of three minutes at Stormont.The latest row comes on the eve of a critical vote in the Stormont assembly on transferring justice and policing powers from London to Belfast. The UUP has indicated it will not support the last act of devolution because they believe the entire power-sharing executive is dysfunctional.Sir Reg Empey, the UUP leader, told the Guardian last ...