Jose Manuel Barroso 'This crisis was not originated in Europe'
World leaders meeting at a G20 summit in Mexico have urged Europe to take all necessary measures to overcome the eurozone debt crisis.
They voiced unease over what one top official described as "the single biggest risk for the world economy".
But European Commission President Jose Manuel Barroso said "the challenges are not only European, they are global".
Sunday's victory of a pro-bailout party in the Greek election did not give stock markets the expected boost, reports the BBC.
Antonis Samaras, the leader of the New Democracy party that narrowly won the poll, is holding urgent talks to form a coalition.
Samaras also reiterated that he would seek changes in the terms of a bailout agreement reached with the EU and IMF.
BBC World Service economics correspondent Andrew Walker says that while Europe is clearly the big danger, there are also problems elsewhere in the world's major advanced and emerging economies, starting with the two largest national economies, the US and China.
The slowdown in India is something else for the G20 to fret about at the Mexican resort of Los Cabos, our correspondent adds.
A draft of the statement to be released on Tuesday is expected to call for a co-ordinated global plan for job creation and growth, reports say.
And if growth weakens, the proposed document says, countries without heavy debts should "stand ready to co-ordinate and implement discretionary fiscal actions to support domestic demand", according to Reuters.
In a separate development, China pledged $43bn (£27bn) to the IMF's crisis-fighting fund.
The move comes after a meeting of the BRICS group of emerging economies - Brazil, Russia, India, China and South Africa. The five nations all offered to increase their contributions to the IMF in exchange for greater influence in the organisation.
US President Barack Obama and Russian President Vladimir Putin held talks on the sidelines of the summit, urging an immediate end to violence in Syria.
In a joint statement following their first meeting since Putin returned to the presidency, they said they shared a belief that Syrians should determine their own future.
The two countries have been at odds over how to resolve the crisis.
A touch defensively, the President of the European Commission Jose Manuel Barroso told a press conference he had not come to G20 to be given lessons.
President of the European Council Herman Van Rompuy added that while Europe might have internal weaknesses to correct, other countries had their own imbalances and unfulfilled promises.
This was partly a nod to the new IMF bailout fund, agreed in principle in April: a global firewall in case the eurozone crisis began to spiral dangerously.
Ahead of this G20 summit, Brazil, Russia, China and Mexico all pointedly failed to commit to their pledges and some of them hinted that Europe could hardly expect them to dig deep into their pockets without a quid pro quo: making good on promised reforms to allot them more voting rights at the IMF's top table.
On Monday, many world leaders expressed alarm in Los Cabos at what they saw as a lack of progress in dealing with the eurozone crisis.
World Bank chief Robert Zoellick said: "We are waiting for Europe to tell us what it's going to do."
Meanwhile, Jose Angel Gurria, the Mexican head of the Organisation for Economic Co-operation and Development (OECD), said the crisis was "the single biggest risk for the world economy".
Pascal Lamy, the head of the World Trade Organization (WTO), warned about the danger of contagion from the eurozone crisis.