We have good intelligence that the Syrians are planning to strike our base. The intruders must be destroyed.

We expect the Syrians to use these fighters:

Red Missile Types:

They also have a couple of H-6E Badger bombers armed with FAB-500M-54 GPB iron bombs and an A-50 Mainstay A AEW aircraft.

An AEW aircraft is a high-value asset and a force multiplier, as its potent radar can track enemy forces at long range and send targeting information to the fighters. Therefore, it should be a top priority to target it.

Interceptors armed with very-long range missiles, like the MiG-31 or the J-20, can be useful for this task. These missiles have a lower PoH (90% for the PL-15 and 85% for AA-9 Amos and AA-13 Arrow), that will further decrease at long range. Using them against an agile fighter will likely result in a miss but are a serious threat against non-maneuverable HVTs (AEW airplanes, tankers, transports, etc).

When you localize the enemy A-50 send a MiG-31, T-50 PAK-FA, J-31 or J-20 to destroy it.

But now, switch on a radar or, better, launch a A-50U Mainstay A. Then order some fighters to take off.