Sri Lanka's Tamil Tigers in the north of the country are marking Black Tiger Day - the annual commemoration of suicide bombers who have died during the past two decades of conflict. This is the second time the rebel organisation has honoured those who died in its elite suicide squads since the ceasefire was signed nearly 18 months ago, and it comes at a time when the peace seems increasingly fragile. The Sri Lankan army has stepped up security in the area and the Norwegian peace monitors say they are keeping a vigilant eye on the events to mark this...