Ukraine crisis: from protest to civil war - a brief history

The ongoing turmoil in Ukraine is one of the biggest issues facing the world today. The crisis has been characterised by a series of shocks - how the Ukrainian President just upped and left one day after an escalation in the pro-EU protests, how Vladimir Putin hit back to annex Crimea, as well as the horrific downing of MH17. Matt Frei has spent time on the front line of the crisis in Kiev and in Donetsk - and explains how the protests turned into an ongoing and bloody civil war.