Exclusive: U.S. blocks North Korean air traffic revival ahead of Trump-Kim summit
![](https://r58b8e.a2cdn1.secureserver.net/wp-content/uploads/2018/02/worldnewsdyil2auoc8za.gif?time=1719172540)
The United States has blocked efforts by a U.N. agency to improve civil aviation in North Korea at a time when Pyongyang is trying to reopen part of its airspace to foreign flights, three sources familiar with the matter told Reuters.