Clock ticking on Greece to repay IMF

It's the billion-dollar question: is Greece going to repay the International Monetary Fund on time? Or will it, in the absence of a new deal with its official creditors, dare default on the global crisis lender which has joined two massive bailouts of the Greek economy? Athens is scheduled to repay $1.6 billion euros ($1.8 billion) to the IMF in four steps between now and June 19.