In a letter to the President of the General Assembly, Volkan Bozkir from Turkey, Secretary-General António Guterres names the countries Iran, Niger, Libya, the Central African Republic, Congo-Brazzaville, South Sudan and Zimbabwe.
According to the UN Charter, a country may not have more than two unpaid annual debts.
Iran, for example, must pay at least $ 16.2 million, equivalent to about $ 136 million.
The UN's annual budget is around SEK 27 billion.
The budget for peacekeeping operations is separate and is around SEK 52 billion per year.