A-35 anti-ballistic missile system

In development as of the 1960s and in operation from June 1972[1] until the 1990s, it featured the nuclear-armed A350 exoatmospheric interceptor missile.

[4][5][6] The three homing radars (called RTN; NATO name Hen Egg)[5][6]) were situated in an equilateral triangle with a length of 150 kilometres (93 mi).

The design of the system called for it to be able to intercept several hostile incoming missiles simultaneously with a single warhead.

[2] The A-35 was to have a main command centre, eight early warning radars with overlapping sectors, and 32 battle stations.

[3] Installation work on the A-35 began in 1965, but by 1967 only the test version at Sary Shagan was ready.

Awareness of the system's flaws, including its inability to handle MIRVs, was part of the reason a 1967 Ministry of Defence commission decided against fully implementing the A-35.

Building of the Don-2N radar started in 1978, and the replacement system was placed on combat duty in 1995.