After the missile strikes by the US, France and Britain on Syria, Russia's president, Vladimir Putin, condemned the attacks and warned that any more would bring chaos to world affairs.
With relations between Russia and the West at their lowest ebb for decades, are we about to see the start of a new Cold War? And if so, what should the 'rules of engagement' be?
David Aaronovitch is joined by:
Gabriel Gatehouse - BBC Correspondent
Alexander Baunov - senior fellow at the Carnegie Moscow Center
Neil Buckley - Financial Times Eastern Europe editor and former Moscow bureau chief
Sir Lawrence Freedman - Emeritus Professor of War Studies at Kings College
Professor Angela Stent - Georgetown University and a former US State Department official.