Colombian President Juan Manuel Santos talks to Stephen Sackur in Bogota.
Should NATO join the coalition bombing IS in Syria after the terrorist attacks in Paris?
Is Brazil teetering on the brink of a major political and economic crisis?
What is making the sport so popular today?
Should foreign journalists report from such dangerous conflict zones?
What does Jeremy Corbyn mean for Labour and for Britain?
Is a new wave of extremism sweeping the West Bank and Gaza?
Will the fight for Africa's endangered wildlife have a happy ending?
As the Obama presidency enters its final phase how have attitudes towards the US shifted?