A pro-Russia rebel leader says separatists will intensify fighting in eastern Ukraine, territories that Moscow has made the primary goal of its military operation in its pro-Western neighbour. "The hottest point now remains the city of Mariupol, where the enemy has concentrated its forces on industrial enterprises", Denis Pushilin, leader of the separatists in the breakaway Donetsk region, also says at press conference in the region's de-facto capital Donetsk. The images were filmed during a trip organised by the Russian military. IMAGES AND SOUNDBITES