By Barnaby Mason BBC diplomatic correspondent

The divisions within Europe over whether to back American military action against Iraq have become more stark.

The British government says France and Germany were not asked to sign an open letter published by eight European leaders, which urges Europe and the United States to stand together to rid the world of Iraq's weapons of mass destruction.

Statement signatories

Jose Maria Aznar, Spain Jose Manuel Durao Barroso, Portugal Silvio Berlusconi, Italy Tony Blair, United Kingdom Vaclav Havel, Czech Republic Peter Medgyessy, Hungary Leszek Miller, Poland Anders Fogh Rasmussen, Denmark

Click here to read full statement

It is signed by five members of the European Union - Britain, Italy, Spain, Portugal and Denmark, and three countries due to join next year - Poland, Hungary and the Czech Republic.

Last week - on the 40th anniversary of their friendship treaty - France and Germany said they would work together in the Security Council to try to prevent a war on Iraq.

The open letter from eight countries close to Washington is a riposte to that - it lays bare the divisions within Europe and draws up the battle lines for the final phase of diplomacy in the Iraq confrontation.

UK Prime Minister Tony Blair's spokesman has spelt out the rebuff to the French and the Germans by saying that they were not even given the opportunity to sign the letter - he added that they did not speak for the whole of Europe any more than Britain did.

There may be an element of internal EU pique in this - Britain was taken aback recently by a series of other Franco-German initiatives.

But for Mr Blair, as he flies to Washington, the open letter demonstrates that he is not alone in his strong support for President Bush.

'New' and 'old'

It is being stressed that the article was drafted by the Spanish Prime Minister, Jose Maria Aznar.

European leaders face pressure not to support a war

Britain says the Netherlands also backed the sentiments but declined to sign because it is involved in talks on a new government coalition.

Significantly, three eastern European incoming members of the EU were signed up: they were identified by the American Defence Secretary, Donald Rumsfeld, as part of the "new Europe", while France and Germany were dismissed as the "old Europe".

And it is worth remembering that some of the leaders who have come out in support of Washington have great problems with public opinion at home.

In Spain, for example, a new opinion poll suggests that more than 40% of people would still oppose military action against Iraq even if it were authorised by the UN.