Four years on – but we will not forget illegally-occupied Crimea

Four years ago, on 18 March 2014, Russia took the final step to illegally occupy Crimea, a part of Ukraine's sovereign territory that Russia had recognised as such in several international treaties.

The Russian takeover comprised a series of equally illegal actions: from using disguised Russian elite troops to the hasty organisation – in breach of Ukrainian and international law – of an illegitimate "referendum".

President Putin initially claimed that those troops had no associa...