That certainly justifies his support for the coalition's referendum lock, which guarantees a vote next time the EU proposes a treaty change which will transfer power to Brussels. (conservativehome.blogs.com)
And, if other EU leaders propose a treaty renegotiation before 2015, while Cameron be able to insist on a new relationship with the EU while still in coalition with the Lib Dems? (theguardian.com)
«If the government had proposed a treaty change to include the charter of fundamental rights into British law, that would have triggered a referendum under the EU bill. (politics.co.uk)