Without a shot being fired, any country with a little know-how could cripple the world economy by spreading a virus. A century ago, the Spanish influenza caused millions of deaths in over two years. COVID-19 has spread much more rapidly thanks to air travel. The big question is: was it manufactured and released, was it a mistake like SARS, or was it caused by animals? COVID-19 first appeared in Wuhan, Central China, at the start of December 2019 but...