Now then mayomick care to take a look at the differences in both instances?

Over Eastern Ukraine:
1: No IATA restrictions in force
2: Not suspected that a civilian airliner flying as high as they do would be under threat of attack
3: Not suspected that the "separatists" had the capability to shoot down aircraft at the high flown by civilian airliners {Civilian air traffic routinely flies over Syria, Libya, Iraq and Afghanistan - and they have done for decades}
4: The warning mentioned was not made to the world at large but to the Ukrainian Government after the rebels shot down the first Ukrainian military transport aircraft.

Over the Persian Gulf:
1: The warning not to take off was issued by the US whose forces were already involved in action in the area over which the airliner was about to fly
2: The warning was given as weapons systems fully capable of shooting down an aircraft flying an extensive envelope in terms of altitude and speed were engaged and likely to be used {A fully automatic and autonomous USN AEGIS system}
3: The Iranians deliberately ignored a specific warning before the event.

Do you always compare apples to oranges, or do you only do this this when it suits your purposes in order to deflect mayomick?