Not all. Norway don't in a way due to massive oil funds that outweighs the debts. Any many countries reduce the debt some years and could pay it back if needed. What I'm talking about the countries that ignore the debt and pay it forward to future generations. Countries with more then 100% of GDP should act. Japan has a massive dept mountain. The best of the best when it comes to national dept. Japan (National Debt: ¥1,028 trillion ($9.087 trillion USD)) Greece (National Debt: €332.6 billion ($379 billion US)) Portugal (National Debt: €232 billion ($264 billion US)) Italy (National Debt: €2.17 trillion ($2.48 trillion US)) Bhutan (National Debt: $2.33 billion (USD)) Cyprus (National Debt: €18.95 billion ($21.64 billion USD)) Belgium (National Debt: €399.5 billion ($456.18 billion USD)) United States of America (National Debt: $19.23 trillion (USD)) Spain (National Debt: €1.09 trillion ($1.24 USD)) Singapore (National Debt: $350 billion ($254 billion US))