Anti-Balistic Missile (ABM) is an acronym for Anti-Balistic Missile. It’s a surface-to-air missile that’s been designed to intercept and counter ballistic missiles, so it’s a missile for missile defence. This phrase can also refer to a ballistic missile-defeating antimissile system. ABM, on the other hand, refers to missiles or systems designed to counter intercontinental ballistic missiles (ICBM).
India has also begun work on a multi-layered ballistic missile defence system to protect the country from ballistic missile attacks. It is a response to missile threats from a number of countries, primarily Pakistan. The Prithvi Air Defence (PAD) missile for high altitude interception and the Advanced Air Defence (AAD) Missile for lower altitude interception are part of a two-tiered system that includes land and sea-based interceptor missiles. This system is designed to intercept missiles launched from a distance of up to 5,000 kilometres.