Bangladesh, Nov. 7 -- Whatever the ultimate costs to nations and its duration, Covid-19 will leave planet earth one day, hopefully soon. But when it does, it will not be with a whimper but after blazing a trail of death and damages the like of which has not been seen since the second world war. Moreover, it will leave after giving a stern warning of reappearance if things remain the same as before. These two lessons, the fact of unprecedented deaths and destruction and the possibility of a repeat performance by the deadly virus or its new incarnations, should be enough of a spur to rethink urgently the global political economic order. After the harrowing experience that countries have gone through and are still being subjected to because of...