A new report from the Institute for Science and International Security has found that 49 countries violated sanctions on North Korea to varying degrees between March 2014 and September 2017.
You will find more statistics at Statista
13 governments including Cuba, Egypt, Iran and Syria were involved in military violations, which as Statista’s Martin Armstrong notes, includes either receiving military training from North Korea or being involved in the import and export of military equipment.
The range of nations involved in breaching non-military sanctions is much broader.
Those violations include importing and exporting sanctioned goods and minerals or aiding shipments by re-flagging vessels. Other instances include