Dubai police '99% sure' Mossad was behind death of Mahmoud al-Mabhouh

• Israeli ambassador told to explain use of fake passports • Relations with Tel Aviv in ‘deep freeze’, warn British officials Julian Borger and Mark Tran guardian.co.uk, Thursday 18 February 2010 13.05 GMT The father of Palestinian militant Mahmoud al-Mabhouh, who was killed recently, holds up a photograph of his son. Dubai police say they…