Russian S-400s in Ukraine's Crimea peninsula. Photo: November 2018

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The S-400 is among the most refined surface-to-air missile techniques

Turkey has acquired the primary components of a Russian S-400 missile defence system regardless of opposition from the US.

The cargo arrived in an airbase within the capital Ankara on Friday, the Turkish defence ministry says.

The transfer will anger the US, which has warned that Turkey can’t have each the S-400 anti-aircraft defence system and US F-35 fighter jets.

Turkey and the US are Nato allies – however Turkey has additionally been establishing nearer hyperlinks with Russia.

What is the argument about?

Turkey has signed as much as shopping for 100 US F-35 warplanes and has invested closely within the F-35 programme. Turkish corporations produce 937 of the aircraft’s components.

However Turkey has additionally pursued an more and more unbiased defence coverage amid strained ties with the US and Europe. It has bought Russia’s superior S-400 air defence system for $2.5bn and despatched members of its armed forces to Russia for coaching.

US defence officers mentioned the S-400 is incompatible with the broader Nato air-defence system within the area.

The officers mentioned they didn’t need the F-35 jets to be close to S-400 techniques as a result of they feared Russian technicians would have the ability to entry the F-35’s vulnerabilities.

  • What Turkey’s S-400 missile cope with Russia means for Nato
  • What’s Nato?

The US warned that it could exclude Turkey from the F-35 programme if the S-400 deal went forward, and warned that it might impose financial sanctions.

Turkey has argued that the 2 techniques could be positioned in separate areas, and that the US was sluggish to supply an alternate missile defence defend.

President Recep Tayyip Erdogan mentioned after a gathering with US President Donald Trump that he believes the US won’t impose sanctions.

This appears set to immediate a significant rift between Washington and one among its key Nato allies. For an alliance member to purchase this type of tools from Russia is sort of unprecedented.

The US has already halted deliveries of the plane to Turkey and suspended the coaching of Turkish pilots.

Plans are additionally beneath solution to take away Turkey from the programme altogether. It manufactures a part of the F-35 and is because of be a regional hub for upkeep of the plane.

Turkish President Recep Tayyip Erdogan appears to imagine that, regardless of the Pentagon might say, Donald Trump himself is much less hostile to the acquisition of the Russian missiles.

A significant check of ties between Ankara and Washington beckons.

How essential is Turkey?

Turkey has the second-largest military in Nato, a 29-member navy alliance.

It is among the US’s key allies, and is positioned in a strategic place, sharing borders with Syria, Iraq and Iran.

It has additionally performed an essential function within the Syria battle, offering arms and navy help to some insurgent teams.

Nevertheless, it has seen relations deteriorate with some Nato members and the EU, who’ve accused Mr Erdogan of adopting an more and more authoritarian fashion following a failed coup in 2016.

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Media captionNato defined in 80 seconds

How does the S-400 work?

  1. Lengthy-range surveillance radar tracks objects and relays data to command car, which assesses potential targets
  2. Goal is recognized and command car orders missile launch
  3. Launch knowledge are despatched to one of the best positioned launch car and it releases surface-to-air missiles
  4. Engagement radar helps information missiles in direction of goal