Global economic recovery 'needs China and US to get on'
Talks between US President Barack Obama and Chinese President Hu Jintao are being billed as the most important meeting between the two countries for 30 years.
Relations between the countries have been strained by issues such as the trade imbalance and China's growing military might.
The BBC's economics editor, Stephanie Flanders, explains why the approach they take will be crucial for the global economic recovery.