Pakistan is poised to take delivery of China’s Shenyang FC-31 Gyrfalcon fifth-generation fighter jets, a potentially pivotal moment in South Asia’s bristling arms race pitting India and Pakistan with China in the middle. This month, Defense News quoted Pakistan Air Force (PAF) chief Zaheer Baber Sidhu saying that the Chinese-made fighters, also known as F-60s or J-21 Snowy Owls, are expected to enter service shortly, without indicating an exact timeframe. Sidhu was speaking at an induction