Russia's President Vladimir Putin has told world leaders at the G20 summit that a return to economic crisis cannot be ruled out.

He said they had not resolved the problem of returning the world economy towards steady and balanced growth.

The leaders, meeting in St Petersburg to discuss the world economy, made progress on tightening up on multinational company tax avoidance.

The meeting's economic agenda has been overshadowed by the Syrian crisis.

Mr Putin said: "Our main task is returning the global economy towards steady and balanced growth. This task has unfortunately not been resolved.

"Systemic risks, the conditions for an acute crisis relapse, persist."

The leaders also agreed to work to boost employment and growth.

(Source: BBC)