Pakistan has said that the Indian purchase of S-400 missile system from Russia is a part of New Delhi's efforts to acquire a Ballistic Missile Defence (BMD) System through multiple sources and this would "further destabilise" South Asia.
Pakistan's ministry of foreign affairs said in a statement that: "This will further destabilise strategic stability in South Asia, besides leading to a renewed arms race."
It said in a statement on Friday that following the May 1998 nuclear tests by both sides, Pakistan had proposed a Strategic Restraint Regime in the region, advocating against the acquisition of BMD systems due to their destabilising effect.
Indian rejection of this proposal forced Pakistan to develop capabilities which render any BMD system ineffective and unreliable. "Pakistan remains fully confident of its ability to address threats from any kind of destabilising weapon system."
The statement further said: "We reiterate our commitment towards ensuring national defence in line with the policy of maintaining credible minimum deterrence and maintaining strategic balance in the region in the future as well".