As Russian troops advance alongside pro-Russian rebels on a new front in Ukraine, Nato says Russia has committed a ‘blatant violation’ of a nation’s sovereignty. James Blitz analyses the worsening crisis, and what options the west has to respond.<br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br />Subscribe to the Financial Times on YouTube; http://goo.gl/vUQx5k<br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes
