There have been a few greek headlines in past days, for example:

While the recent news has been met with a jaded reaction, it is not going to be too long before these concerns bubble up. As a bit more background check out this extended piece from Bloomberg, it'll get you up to speed if need:

  • Greece's government, unable to borrow from bond markets at affordable rates, has relied for years on loans from Europe's bailout fund and the IMF to pay its bills. Those loans come with strict conditions, and the government and its creditors are arguing over whether Greece is fulfilling them. Investors are once again on red alert.

Here is the link