Day 531. Today, we discuss the huge, mysterious explosion at a factory near Moscow known for producing night vision devices for the Russian army, report on “heavy battles” raging in the east of Ukraine, and debate whether it is possible or advisable to suspend Russia from the UN Security Council.Contributors:Francis Dearnley (Host, Assistant Comment Editor). @FrancisDearnley on Twitter.Dominic Nicholls (Associate Editor, Defence). @DomNicholls on Twitter.Hamish De Bretton-Gordon (Former British Colonel). @HamishDBG on Twitter.Subscribe to The Telegraph: telegraph.co.uk/ukrainethelatestEmail: ukrainepod@telegraph.co.ukSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.