French President Nicolas Sarkozy labelled \"unacceptable\" Friday a set of conditions imposed by  Prime Minister David Cameron for the latter to back full EU treaty change. \"We would have preferred a deal at the level of the 27,\" Sarkozy said after late-running talks at a crunch summit ended at around 0400 GMT. \"That wasn\'t possible taking into account the position of our British friends,\" he added. Sarkozy said that \"in order to accept treaty revision among the 27 EU states, David Cameron asked us -- something we all judged unacceptable -- for a protocol to be inserted into the treaty granting the United Kingdom a certain number of exonerations on financial services regulations\", Sarkozy said.