Relations between Ankara and Moscow have cooled since the killing of Turkish soldiers in a government attack in Idlib
S-400
The system has unofficially achieved FOC (Full Operational Capability) but for diplomatic reasons the official announcement has been postponed
Turkey’s deepening economic woes are widely seen as one -but not the only- reason behind the delay the activation of the S-400s
The North American country is not the only state to enforce an arms embargo on Turkey following the military operation last year
Turkey’s acquisition of two Russian-supplied SAM systems remains a source of friction between the two NATO allies
Turkey hopes the system will be operational by April, a major turning point in Turkey-Russia relations
Senior US official says that S-400 acquisition "challenged membership in NATO"
This shows the US is serious about removing Turkey from the F-35 program because it acquired the Russian S-400
“The signing of a deal is just around the corner”
The US draft budget also foresees imposing sanctions on some shipping companies involved in laying pipelines being built by Russia & Turkey
