Reuters:

Canada said on Thursday that a surface-to-air missile brought down a Ukrainian airliner in Tehran, while the Ukrainian government said it was investigating reports of debris from a Russian-made Tor-M1 missile.

The Tor, also called the SA-15 Gauntlet by NATO, is a short-range “point defense” system that integrates the missile launcher and radar into a single tracked vehicle.

It is designed to be mobile and lethal against targets at altitudes up to 6,000 meters (20,000 feet) and at ranges of 12 km (7.5 miles), according to the Federation of American Scientists, which researches and analyses “catastrophic threats to national and international security”.

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