We will work everything out, says US defence secretary James Mattis on India's purchase of S400 defence systems from Russia

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Russia's S400 system, a mobile long-range surface-to-air missile system, made its debut on the world stage in 2007. The platform rivals Lockheed Martin's THAAD, or terminal high altitude area defense, system and Raytheon's Patriot system.

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Press Trust of India

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