It was a typically ingenious strike by Ukraine’s SBU security service.

Just before the sun rose over snow-covered Moscow on Tuesday, a bomb hidden in the handlebars of an electric scooter killed Lt Gen Igor Kirillov, the head of the Kremlin’s chemical weapons military unit.

Leaked security camera footage showed the moment that the bomb exploded outside an apartment block off Ryazansky Prospekt, a long and wide boulevard lined with shops and apartments leading out of central Moscow.