The S-400 is just objectively better than anything US is selling. The possibility of Patriot having a US killswitch is an afterthought if it was considered at a

The S-400 is just objectively better than anything US is selling. The possibility of Patriot having a US killswitch is an afterthought if it was considered at all. It's also equally probable that the S-400 has a Russian killswitch. The actual motivation for Turkey to pick the S-400 was entirely political. They are signalling allegiance to Russia. The US is now cancelling Turkey's F-35 order in response.