World leaders of the G20 nations are set to meet this Thursday and Friday in Seoul. They're gathered for one main purpose - to boost global economic recovery.

Fine-tuning their focus.

The global financial crisis has gathered G20 leaders together four times in the past two years. It's become a key forum for discussing, and putting in place measures to ease the world's financial woes.

For the fifth G20 meeting to be held later this week, the mandate has shifted, from pulling the world out from crisis to accelerating the recovery process.

Qu Xing, President of China Institute of Int'l Studies said "The toughest period of time has passed. The global economic recovery is still fragile and unbalanced. So what we should do next."

Although G20 finance leaders have pledged to solve global economic imbalances, the Fed's bond-buying programme has deepened concerns the U.S. dollar will take a dive, driving up exchange rates in other countries.

Experts believe striking a balance between the economic development of developed and emerging countries, is still high on the G20 agenda.

Qu Xing said "Protectionism is a threat, and formation of the world financial supervision order is also an issue. We are still not taking enough steps to ensure sufficient efforts have made to promote the development of emerging economies."

Experts say if G20 leaders are unable to find a solution this week, it could intensify investor concerns - that global cooperation is giving way to national policies that may not be in the world economy's best interest.