New clues:
1. This aircraft was the first supersonic warbird developed in the nation that developed it.
2. It was developed from a trainer aircraft.
3. Single seat aircraft
4. Two engines.
5. Service ceiling of 50,000 feet.
6. Only used by one nation.
7. Designed for missions including: close air support, ground-attack and anti-shipping.
8. Had a radar system similar to the system used in RAF F-4M Phantom II fighters.
9. It was in service from 1978 to 2006.
10. It was a development of a trainer aircraft.