Prime Minister Gordon Brown will call on fellow world leaders to seize the opportunity created by the current worldwide economic crisis to create a "truly global society".
Mr Brown will use a high-profile speech in the City of London to say that Britain, the US and Europe should join together to provide leadership in the creation of a "stronger and more just international order".
The emergency summit of world leaders in Washington must establish consensus on a new Bretton Woods-style framework for the international financial system, featuring a reformed IMF which will act as a global early-warning system for financial problems, he will say.
The Prime Minister promised on Sunday to work with US President-elect Barack Obama to build a new global society in which the markets are subjected to morality and ordinary people's interests are put first.
In electing Mr Obama, US voters showed their belief in the "progressive" agenda of government intervention to help families and businesses through the current crisis, he said.
In his annual foreign policy speech to the Lord Mayor of London's Guildhall banquet, Mr Brown will say that the trans-Atlantic relationship between Britain and Europe and the USA can be the driving force behind the creation of a new international order.
