[4] In June 2022 Siemens Chief Executive Officer Roland Busch condemned the war in Ukraine and announced that the company had decided to wind down its industrial business activities in Russia.

[5] Since 2023, the Sinara Group has been implementing its own new project (based on Siemens Desiro technical solutions) - electric train ES104 under the former commercial name "Lastochka".

[6] Dual-system trains with automatic system transfer were the ideal solution for amalgamating pre-existing railway lines in the region of the Olympic Games.

There, the main railway network operating in flat terrain along the coast of the Black Sea had been electrified with direct current at 3 kV, while the lines built in the mountainous section of Adler – Krasnaya Polyana had been electrified with AC voltage at 25 kV, 50 Hz, appropriate for the steep gradients, and hence much higher power demands.

All technical solutions adopted by Siemens in the design of the new Desiro ML RUS electric trains were discussed with experts from specialized research institutes and were approved by Russian Railways.

The topographical conditions in the region of the Olympic Games present higher requirements for automated systems and traction equipment.

[7] On 11 November 2013, Ural Locomotives started manufacturing a new model developed for 3 kV-only routes with the interior designed for city lines.

[8] In March 2016, Ural Locomotives transferred to RZD a new train designated as ES2GP (Russian: ЭС2ГП (Электропоезд Сименс мод.2 городской повышенной комфортности), lit.