VIENNA, March 30 - Billionaire financier George Soros is ready to invest $1 billion in Ukraine, if Western countries help private investment there. He also put the odds of Greece leaving the euro at a third, in an interview with Austrian newspaper Der Standard, Reuters reported.

Soros has previously urged the West to step up aid to Ukraine, outlining steps towards a $50 billion financing package that he said should be viewed as a bulwark against an increasingly aggressive Russia.