said a U.S. historian on Monday. The atomic bombings of Hiroshima and Nagasaki in August 1945 in Japan opened a new chapter in the world history， a professor of history at Northern Kentucky University. "It is important to remember that the United Nations has managed to keep the world from a major global conflict for 75 years，" he added. ， and to assure that 7.8 billion people worldwide receive vaccines when they become available，澳门星际网站，澳门星际网址，澳门星际官网 澳门星际网站， he said. Tenkotte also stressed the importance of joint efforts from different countries in fighting COVID-19. "It will require a concerted effort of every nation to defeat COVID-19，澳门星际网站，澳门星际网址，澳门星际官网 澳门星际网站，" he said. "That alone will require a massive international logistical effort。

said Paul A. Tenkotte。

Facing the threat of instant annihilation from atomic bombings， another world war is simply not an option for any reason or for any nation at any time， and the only option for mankind is the rational and peaceful resolution of its challenges，" Tenkotte told Xinhua in an email. International negotiations are never easy。

but certainly easier and less costly than any war，。