Russian invasion of Ukraine

That kinda hangs together though, esp from a Russian point of view.

My Russian colleague at work pointed out that the original invasion of Crimea was to secure access to the Black sea. This is the only port that Russia has with access to a coastline that doesn't freeze in winter. He also pointed out that Crimea is historically short of water, which is piped in from mainland Crimea.
We know that Ukraine cut this supply off as one of their responses to the invasion of the Crimea, so you can see how this all feeds into their paranoia.