Iran was among the top issues on the agenda during Bush's back-to-back summits with fellow Nato and EU leaders on his first trip to Europe since his re-election last November.
Bush voiced support for an ongoing attempt by British, French and German diplomats to get Tehran to renounce its feared pursuit of nuclear weapons in return for trade and economic incentives.
"You know, we've talked about Iran," said Bush, referring to his two days of discussions in Brussels. "That's a place where I'm getting good advice from European partners."
"After all, Great Britain, Germany and France are negotiating with the ayatollahs with a common objective, something we all want, and that is for them not to have a nuclear weapon."
"It's in our interests for them not to have a nuclear weapon," he said. "It's also in our interest for them not to continue to fund terrorist organisations like Hizbullah, which has the desire to stop the Middle East peace process from going forward," he continued.
"So these are great interlocateurs on behalf of the position we share. There's an example of concrete (transatlantic) action."