US President Barack Obama heads to the UK on Tuesday for his first overseas trip since taking office, to take part in the economic summit of 20 major and developing nations that together represent more than 85% of the global economy.
Advisers said the goal was to manage the current crisis by restoring growth and to prevent a future downturn by reforming financial regulations.
Mr Obama has vowed to listen to his foreign counterparts and lead by example to address the economic crisis and work to stem future financial catastrophes.
Discussions are expected to be intense as there are wide differences between the US and Europe over how to stabilise and grow economies.
Mr Obama's jam-packed agenda includes a major speech in France on the US trans-Atlantic relationship.
He will deliver another one in the Czech Republic on nuclear proliferation.
Then he goes to hold a round-table in Turkey with students.
He also has plans to meet with Saudi Arabia's King Abdullah, as well as a slew of other heads of state as part of a rigorous schedule.