What Is the S-400? The Russian Missile System in Turkey That Irks the Pentagon
What Is the S-400? The first elements of a complicated, Russian-supplied surface-to-air missile system, often known as the S-400, arrived in Turkey on Friday. It was a second American officers had been anticipating for months. They had warned Turkey that buying the tools would jeopardize the nation’s anticipated receipt of American-made F-35 warplanes. And now…