The Tories failure to cohere round a line of opposition adds hugely to Mr Blair's room for manoeuvre.

ECONOMIST: The Tories

As a result, a generally atomised, sometimes fractious place seemed to cohere.

ECONOMIST: Bagehot: Glory and hope | The

Motive tends to provide coherence, and fiction needs things that cohere.

NEWYORKER: Laureate of Terror

The whole concoction doesn't cohere as a freestanding vision.

WSJ: Review: A New Interpretation of a Masterpiece | 'Eduardo Arroyo: The Mystic Lamb' at the Prado in Madrid

But all three of those parties still go into the election committed to a renegotiation of the austerity terms, so for such a last-ditch centrist government to cohere, Germany has to want Greece to stay in the Euro.

BBC: Will Europe let the Greek political centre fall?