The US has banned Turkey from buying the S-400 missile defense system. Along with this, the US has also warned those countries that are willing to buy the S-400 missile defense system. The US has banned Turkey’s defense industries and three other officials, including its president, for purchasing the S-400 missile system from Russia. The US Ministry of Finance issued a statement sharing this information. US Secretary of State Mike Pompeo said that the United States has imposed sanctions on Turkey for the purchase of the Russian S-400 surface-to-air missile system. He further said that Turkey has broken the rules,