A voice from London. Whatever the fate of the Lisbon Treaty, it will be of decisive importance for the issue of the two-speed Europe (see this section in yesterday's bulletin). If this treaty enters into force, it will pave the way for different forms of cooperation, allowing those countries which wish to reinforce European integration to do so; if it fails, the desire of certain member states to move forward in any case will be consolidated, and the countries which wish to will participate....