Legacy Fighters- F 15 , F 16 , Tornado and Harrier

It is true but I realized this only after I posted the first chapter in forum Modern Aviation.
Although aircraft like the F 15, F16, Tornado and Harrier are considered old projects there should be no more than 08 countries today that are capable of producing these aircraft today, not even China is now the second power in the world economy today has projects own such as those mentioned above and with similar performance in their production lines.
Even older aircraft’s may have secrets that used in new projects could become its more effective and deadly.
The purpose of these threads shall be describe these facts in seven chapters.