As the Iran war drags on into its sixth week, CNA takes a look at how some Southeast Asian states are responding to the energy crisis and skyrocketing costs.    SINGAPORE:  A global energy crisis sparked by the closure of the Strait of Hormuz amid the Iran-Israel-US war has disrupted lives across vast segments of Southeast Asia’s populations. Of the crude oil and liquefied natural gas (LNG) passing through the strait, 84 per cent of crude and 83 per cent of LNG are bound for Asian markets,