IMF's Lagarde: avoided global collapse, but can't relapse or relax

The International Monetary Fund, or IMF, said world leaders have avoided economic collapse in many parts of the globe. 

But IMF's Managing Director Christine Lagarde said authorities must press ahead to prevent a relapse, with little improvement in high unemployment levels and continued debt crisis in the euro zone. 

She said that's particularly true for advanced economies as debt levels and high deficits are keeping investors jittery and curbing growth. 

Ms Lagarde added that the European Central Bank should keep monetary policy easy and perhaps try to lower borrowing costs further to help the euro zone's struggling