China and Pakistan teamed up to produce a 4th-generation multi-role fighter called the JF-17 Thunder (or FC-1 by China). Successfully developing a new fighter jet is very hard, and it is common for programs to fail or result in questionable jets like Russia’s supposedly fifth-generation Su-57 Felon. So far, the JF-17 Thunder has had some operational success in low-intensity missions (such as by Pakistan on local terrorist cells and by Nigeria on militants in the north of the country). However, its performance against peer adversaries remains another question.