China may sell Pak its DF-17 missile: Why China thinks India’s S-400 is a threat

• Pakistan and China have come up with a new strategy in wake of India flexing its military muscle. Experts suggest that China is likely to equip Pakistan with its DF-17 hypersonic missile system in a bid to counter India's S-400 air defence system. Richard D. Fisher, a senior fellow at the International Assessment and Strategy Center in an interview has claimed that China is likely to sell the DF-17 or assist Pakistani HGV like it has supported North Korea’s new hypersonic glide vehicle (HGV) missile warhead. Hypersonic weapons, which travel at Mach 5 speeds (five times the speed of sound), are difficult to track and engage for air defence systems like S-400, that both India and China possess. Pakistan sees India's acquisition of the S-400 as a threat because of the system's versatility, which allows it to shoot down planes even in Pakistani airspace. A notable element of the S-400 is its potential offensive capabilities, which would limit an adversary's usage of its own airspace. The defensive system can cover a huge portion of Pakistan because of the country's terrain and lengthy border with India. Watch for more details.