A plan to provide military training to the Syrian rebels fighting the Assad regime and support them with air and naval power is being drawn up by an international coalition including Britain, The Independent has learnt.

The prospect of Western intervention comes as opposition groups, which have been disorganised and divided, at long last formed an umbrella political group and a command structure for their militias. Their foreign backers are said to believe that the 22-month-long civil war has now reached a tipping point and it has become imperative to offer help to the revolutionaries to enable them to make a final push against the regime.

The head of Britain’s armed forces, General Sir David Richards, hosted a confidential meeting in London a few weeks ago attended by the military chiefs of France, Turkey, Jordan, Qatar and the UAE, and a three-star American general, in which the strategy was discussed at length.