India's purchase of the S-400, a Russian air-defense system, could be a problem for the US as it seeks relationships to counter China's influence.

Russian S-400 surface-to-air missile systems during the Victory Day parade in Moscows Red Square, May 9, 2015.
REUTERS/Sergei Karpukhin

The US has...

https://www.businessinsider.com/india-s400-purchase-risks-us-sanctions-amid-competition-with-china-2021-5

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