Dr Igor Sutyagin: Russia's motives in Ukraine
Dr Igor Sutyagin of the Royal United Services Institute for Defence and Security Studies gives his view on Russia, Ukraine, and what Vladimir Putin wants out of the conflict.
Dino Mahtani: corruption and security in Africa
Dino Mahtani, investigative journalist and formerly a correspondent at the UN, explains how corruption and security are linked - and how solutions to security problems do not need to be military.
Awet Weldemichael: what could stop violent conflict in Africa?
Awet Weldemichael from Queen's University, Ontario discusses groups such as al Shabaab and questions what is needed to stop violent conflict in Africa.
Andrew Lyons: digital security for the journalist
Andrew Lyons from the Rory Peck Trust explains how journalists can keep themselves safe online and protect their sources and data.
Investigating a deal that deprived Nigeria of millions
A journalist's account of his 15 years of unrelenting digging into ALSCON, a company that was sold in suspicious circumstances
Andrei Serbin Pont: could Venezuela become a "state in crisis"? (copy)
Andrei Serbin Pont, international analyst and research coordinator at CRIES, a network of Latin American civil society organisations, discusses Venezuela and whether it could be heading for a crisis situation.
Pope draft encyclical calls for swift action on climate change
Pope Francis' intervention could spur world's 1.2 billion Catholics to lobby policymakers on ecology issues
Ten revelations about how we consume digital news
Smartphones, online video and “native” advertising are changing the way we devour news, a survey shows
Violence in Burundi forces journalists into exile
While all private radio and television stations go dark, Clarisse Irakoze will not be silenced