The Houthis threatened to strike King Khalid Airport in Riyadh after what they called "blatant aggression" targeting the Sanaa airport runway.
https://www.foxnews.com/world/iran-backed-terror-proxy-houthis-threaten-fresh-attacks-after-yemen-airport-strike
https://www.foxnews.com/world/iran-backed-terror-proxy-houthis-threaten-fresh-attacks-after-yemen-airport-strike