"We are anxious to see that we take a decision at G20 summit to have a monitoring mechanism about protectionism," the British Prime Minister said.

Brown, who embarks on a diplomatic offensive on Tuesday to win support for his plans to boost the recession-hit world economy, had a lengthy telephonic talk with President Barack Obama last evening on issues that would come up at the G20 summit. The two leaders also touched upon Iran, Pakistan and Afghanistan.

Brown will give a speech at the European Parliament in Strasbourg about the financial crisis before flying to New York for a meeting with UN chief Ban Ki-Moon and then to Latin America for talks with leaders in Brazil and Chile.

In Brazil, Brown will have talks with President Luiz Inacio Lula da Silva, and in Chile he will take part in a summit of centre-left leaders and meet President Michelle Bachelet.