Unfortunately this is not controlled by Windy. Please see the following posts and instead direct your issue to www.openstreetmap.org where the map data for Windy is sourced from:
https://community.windy.com/topic/5564/disputed-territories-on-windy
https://community.windy.com/topic/4649/how-to-correct-errors-in-the-base-maps
Also let's leave political topics out of the Windy forum please and focus on the discussion of weather.