Syria in 90 seconds: A divided opposition
30 May 2013 Last updated at 09:16 BST
Syria's main opposition coalition has found itself on the wrong end of fierce criticism from rebels fighting on the ground.
The row is just the latest public division in the ranks of those seeking to topple Syrian President Bashar al-Assad.
With the US and Russia calling for talks, and pro-government forces holding firm in battle, analysts say the rebel effort must be united - politically and militarily - to stand a chance of victory.
Adam Blenford reports.