As President Putin repeats his assertion that Ukraine and the West are behind the terrorist attack last week that killed 137 Russians, the evidence is only growing that this was the work of ISIS. The culprits come from a faction that have risen out of the ashes of the former ISIS Caliphate: ISIS-K. So who are they? And how worried should the rest of the world be?This podcast was brought to you thanks to the support of readers of The Times and The Sunday Times. Subscribe today: https://www.thetimes.co.uk/podcasts/the-story Guest: Mark Galeotti, historian, journalist and author of ‘We Need to Talk About Putin,’ ‘Putin’s Wars’ and ‘A Short History of Russia.’Host: Manveen Rana.Clips: Telegraph, PBS Newshour.Email us at our new address: thstory@thetimes.co.ukFind out more about our bonus series for Times subscribers: 'Inside the newsroom' Hosted on Acast. See acast.com/privacy for more information.