Two tributes, one in Paris and the other in London. The one in the French capital was for the 13 soldiers killed on patrol in Mali when their helicopters collided. A reminder that counter-terror and preventing jihadists from preying on weak states is part of an asymmetrical battle that crosses continents. Depending on your vantage point, it can be near or far. Like for those worshippers at a Catholic Church in Burkina Faso gunned down on Sunday morning.