In British defence circles there is growing confusion about the role of British ground forces in the next phase of operations in Afghanistan. At the beginning of last week, defence sources widely predicted that up to 1,000 British troops would soon be involved, the men of one of the two Royal Marine Commandos (about 600 men) involved in exercises in Oman, plus special forces from the SAS and SBS. An announcement was expected last Wednesday, but this was then put off until last Friday.