Poland sends 200 tanks to Ukraine as Kyiv claims Russia is suffering 'colossal losses' in East and another of Putin's oil depots is set ablaze

Poland has sent 200 T-72 tanks to Ukraine as part of heavy weapons shipment
Mobile artillery, drones and missile launchers also sent as part of $1.6bn package
Comes as allies step up support to Ukraine, with US pledging $33bn in support