SEPT 8 — Natural disasters do not recognise sovereignty, military strength or economic rank. Yet when they strike at the right — or wrong — place and moment, they can alter all three. A volcano cannot conduct foreign policy, but it can destroy the infrastructure, military installations, economic arteries and political assumptions upon which foreign policy and national power depend.That is the strategic lesson Asean should draw from the renewed activity of Anak Krakatau.Sitting in the Sunda Strait between Java and Sumatra, Anak Krakatau is not merely another restless volcano on the Pacific Ring of Fire. Its location places it close to…