Iraq Vs. Kuwait 1991, Saudi Arabia Vs. Qatar 2017

"Shortly after imposing a naval blockade in the immediate aftermath of the Qatar diplomatic crisis, one which left the small Gulf nation not only politically isolated and with severed ties to its neighbors but potentially locked out of maritime trade and crippling its oil and LNG exports, on Tuesday SkyNews Arabia reported that Saudi Arabia has given Qatar a 24 hours ultimatum, starting tonight, to fulfill 10 conditions that have been conveyed to Kuwait, which is currently involved in the role of a mediator between Saudi and Qatar."