Re-check your coordinates. The plane left Kuala Lumpur for Beijing. The distance from Kuala Lumpur to the farthest of the Philippines islands is less than half the distance to Beijing.
The fuel on-board was reported to be enough for Beijing (5.5 hrs), plus another 2 hrs. At 500 mph, that’s a radius of some 3,750 miles - roughly the distance from Dallas to Honolulu. That’s a LOT of globe to cover if it truly was “diverted” by unknowns on-board.
You’re right. I read at one point that it had enough fuel for about 4200 miles, but then other posters said it had only enough for a relatively short trip (for a plane that size) and that the Philippines would be beyond that. I never checked.
So it could be out there on one of those islands. But if Diego Garcia is involved, I’d bet it’s Somalia or maybe Madagascar.
So Iran, Somalia, North Korea, Burma, even Pakistan....