It's been coming for months, it's not a surprise. We washed our hands of it months ago. Everything is now posturing.
Streetwise Professor has been monitoring. Here are a few of his blog posts, see his site for the full saga.
November 23rd:
Ukraine & Russia. Sovok Players. Sovok Tactics. Sovok Results. No Surprises Here.
January 31st:
Ukraine: (Relative) Calm Before the Storm
February 6th:
Look Beyond the F-Bomb: An Ominous Harbinger of Things to Come in Ukraine.
February 17th:
Poor Ukraine: So Close to Putin, So Far From God