G20 must strengthen economic recovery: Obama

US President Barack Obama has urged the world's leading economies to boost reforms aimed at maintaining the global recovery, ahead of two key summits next week.
"We worked exceptionally hard to restore growth; we cannot falter or lose strength now," Obama said in a letter to G20 leaders ahead of a June 26-27 summit in Toronto.
"Our highest priority in Toronto must be to safeguard and strengthen the recovery," Obama stressed in the letter dated June 16, but released Friday amid concerns about the pace of global recovery.
The summit follows a meeting of G8 leaders on June 25 and comes after months of worry about the health of the eurozone, fueled by Greece's huge public debt and concerns over the solvency of countries like Portugal and Spain.