Ukraine's military has bolstered its defences in Mariupol as pro-Russia separatists continue to advance towards the area.<br /><br />Al Jazeera's Harry Fawcett reports from Mariupol where he witnessed a column of heavy armour on its way to the port city.<br /><br />Subscribe to our channel http://bit.ly/AJSubscribe<br />Follow us on Twitter https://twitter.com/AJEnglish<br />Find us on Facebook https://www.facebook.com/aljazeera<br />Check our website http://www.aljazeera.com/
