they shout defiantly. both countries fighting the imperial oppressor. they travel from warsaw to war, hours first to the border. a final sip of safety before a crossing off limits to our camera. their sights set on victory for two nations in arms. mark lowen, bbc news, on the poland—ukraine border. the russian billionaire alisher usmanov says he no longer owns many of his uk properties that once belonged to him. that could leave them beyond the reach of government sanctions. they included a multi—million pound mansion in north london and a tudor manor house in surrey. it raises serious questions about the effectiveness of sanctions imposed since the invasion of ukraine began, as andy verity reports. he's been described as one of president putin's favourite oligarchs. alisher usmanov is said to be worth an estimated $18.4 billion and used