President Bush will arrive in Shanghai on Thursday
Foreign ministers from the 21 members of the Apec Asia Pacific group meeting in Shanghai have agreed a joint declaration which condemns terrorism in all its forms.
The statement, agreed after a meeting attended by US Secretary of State Colin Powell, says any terrorist activity should be struck down, and the flow of funds to terrorist organisations should be stopped.
US President George W Bush is due to arrive at the summit later on Thursday.
It is the first gathering of world leaders since the attack on the World Trade Center last month.
This is a very welcome show of support for President Bush's campaign against terrorism, from a part of the world which has often been uneasy about US foreign policy.
All 21 members of Apec have agreed a statement which condemns terrorist activity.
More significantly, there is no criticism in it of the US operations against Afghanistan, even though there is strong domestic opposition in some member countries, notably Indonesia and Malaysia which are predominantly Muslim.
The statement does stress, however, that terrorism should be fought through the United Nations.
Striking endorsement
This endorsement from a region of more than two billion people will help President Bush to present the US actions as part of a global campaign.
It is also striking that the Apec host, China, is now willing to back the US.
Just eight months ago the two countries were at loggerheads over a collision between a US spy plane and a Chinese fighter.
Like many east Asian countries, China is concerned by militant Islam within its own borders.
It may also be hoping that helping Washington now will result in less criticism of China's human rights record in the future.