Ukraine launches offensive on pro-Russia activists

Ukraine's army has launched an aggressive military operation to retake the town of Slovyansk.<br /><br />The country's interior ministry said up to five pro-Russia activists were killed, as the government tried to regain control of several towns along the border with Russia.<br /><br />Al Jazeera's Barnaby Phillips, reporting from Slovyansk, and Peter Sharp, reporting from Moscow, update us on the conflict between pro-Russia separatists and Ukrainian forces.