within hours of each other. dan rosenfield quit as chief of staff, martin reynolds as principal private secretary, jack doyle as head of communications and munira mirza as head of policy. president biden says the leader of the islamic state group abu ibrahim al-qurayshi has been killed during a raid by us special forces in the syrian province of idlib. reports say he detonated a bomb at the start of the operation. the us says the kremlin were planning to broadcast fake images of the ukrainian army shooting russian sympathisers, as a pretext for an invasion. the first minister of northern ireland has resigned in protest at post—brexit trade rules which his democratic unionist party bitterly opposes.