Active construction has been seen at a nuclear test site in northern Russia since last year, raising the possibility that Moscow is preparing for a fresh nuclear test, a Japanese expert on the Russian military said Monday.Citing analysis of satellite images, Yu Koizumi, associate professor at the University of Tokyo, said a large-scale facility presumed to be related to nuclear testing appears to be almost complete at the site on the Novaya Zemlya archipelago in the Arctic Sea.Koizumi called the activities exceptional and said Russia could be preparing a subcritical nuclear test, which does…READ FULL ARTICLE