North Korea has launched ballistic missiles from its main international airport on no less than nine occasions this year, an uptick in testing that raises questions about whether the airfield could become a target for unilateral U.S. sanctions.

Experts told NK Pro that designating Pyongyang’s Sunan International Airport could have a significant impact on Chinese companies, but they said such measures would also be difficult to enforce and could obstruct humanitarian work in the country.

The DPRK first used Sunan for missile testing in 2017, and one of the two test launches from the