The Labour party will warn on Wednesday that it can offer no guarantees that it will be able to reverse any of the coalition's defence cuts in light of Britain's tight public finances.
David Cameron responded to Nato disarray over its approach to mentoring Afghan security forces by telling the cabinet that he plans a full-scale cabinet-level review of British policy in Afghanistan soon after the US elections in November.
Britain's role in supplying information to an American military "kill list" in Afghanistan is being subjected to legal challenge amid growing international concern over targeted strikes against suspected insurgents and drug traffickers.
The government has been forced to defend its decision to recruit an additional 3,500 troops to guard Olympic venues, insisting the move was not evidence of a "shambles" amid a series of setbacks to preparations for the Games.
At first Debi Allbutt was told her husband had died in an accident. Defence officials explained how he had been killed during the heat of battle, with a desert storm compounding the chaos during nocturnal manoeuvres outside the southern Iraqi city of Basra.