A butcher who survived the terrorist attack on Nairobi's Westgate mall by hiding behind his counter has described how gunmen sat sipping fizzy drinks before continuing their deadly rampage.\n\nFred Bosire's tale of survival came as the Foreign Office revised down the number of British nationals who died in the Kenyan capital from six to five.\n\nIt also emerged that Interpol has issued an arrest warrant for British woman Samantha Lewthwaite following the attacks.\n\nAs a new picture was released showing two of the attackers walking through the shopping centre