The head of Russia’s strategic defense industry corporation Rostec says Moscow is ready to sell S-400 air defense systems to any nation that feels insecure and wants to seal its airspace, including the US if it wants to. Russian S-400 Triumph/SA-21 Growler medium-range and long-range surface-to-air missile system. © RIA Novosti via / Reuters Just … Continue reading Russia might sell S-400 systems to US if Americans feel insecure