North Korea has completely cleared planes from the tarmac in front of Pyongyang International Airport in recent days, a rare activity associated with foreign leader visits that likely signals preparations to host Russian leader Vladimir Putin as early as this week.

NK Pro analysis of Planet Labs imagery shows Air Koryo planes were removed from a parking apron near the airport’s terminal building between June 6 and 10. They remained parked in other parts of the airport on June 11. 

The same action was taken just prior to other world leaders arriving for meetings with DPRK leader