HARDtalk - Radoslaw Sikorski

After Poland lost its president and a host of top officials in a plane crash in western Russia, what will be the long term impact of this national catastrophe? Many Poles have been impressed by Russia's reaction to the tragedy and hopes have been raised that the sometimes difficult relations between the two countries will improve. Stephen Sackur talks to Poland's foreign minister, Radoslaw Sikorski, about the lessons can be drawn from all that has happened since the tragedy in Smolensk.