Puerto Rico and China also in deep doo.

Greece slipped deeper into its financial abyss after the bailout program it has relied on for five years expired at midnight Tuesday and the country failed to repay a loan due to the International Monetary Fund, deepening fears over whether it will be able to remain in the eurozone.

With its failure to repay the roughly 1.6 billion euros ($1.8 billion) to the IMF, Greece became the first developed country to fall into arrears on payments to the fund. The last country to do so was Zimbabwe in 2001.