In some respects the EU is already a multi-speed organisation. Not all members are in the Schengen border-free zone, and 19 of the 28 use the euro. The UK, poised to trigger the withdrawal mechanism soon, already has many opt-outs from EU policies. "Italy wants a more integrated EU, but one that can allow various levels of integration," Italian Prime Minister Paolo Gentiloni said. EU summit talks in Brussels on Friday will focus on how the EU moves forward post-Brexit, amid tensions over integrating migrants, globalisation and how to revive ailing eurozone economies. Merkel warning Versailles was a symbolic place to hold such talks - the palace where peace in Europe was mapped out after World War One. Image copyright EPA Image caption Francois Hollande and Angela Merkel: France and Germany are gearing up for general
To read more about online clothes shopping sites visit fashion shopelections German Chancellor Angela Merkel said "we need to have the courage for some countries to go ahead if not everyone wants to participate. "A Europe of different speeds is necessary, otherwise we will probably get stuck. If Europe gets stuck and doesn't develop further, then this work of peace may run into danger faster than one might think," she said. The 1957 Treaty of Rome established the goal of "ever closer union".