Will Ireland scupper Lisbon?

Many of Europe's capitals are now on tenter hooks as they await the result of the Irish referendum on the Lisbon Treaty.

In the event of a No options will be to tweak the Treaty and vote again or just abandon the whole thing.

If abandoned, options will include annual mini treaties (not the same as mini treats) with each individual item of the Lisbon Treaty or a core of European countries going it alone with Britain and Ireland on the outside.