A comment below this great answer about the Kurs navigation and docking system linked to the following page on the Ukrainian company Elimz website: http://www.elmiz.com/en/product/orbitalnyj-servis-eng/product/view/2/1
Is Elimz currently manufacturing Kurs systems and is Russia currently buying systems built in the Ukraine for ongoing Soyuz missions to the ISS? I ask partly because the respective governments have had some "disagreements" in recent years.