A large explosion in the sky above Ukraine’s capital of Kyiv has been captured on camera.The BBC has confirmed it is in the Poznyaky neighbourhood.Please subscribe HERE http://bit.ly/1rbfUogThe sound of gunfire has echoed through Ukraine’s capital Kyiv as Russian tanks were filmed entering the city for the first time.Ukraine’s Ministry of Defence called on those living in the northern outskirts, where the tanks were seen, to make fire bombs “to neutralise the enemy”.#BBCNews