Workers plant trees in Hebei province, China, as part of a massive national reforestation initiative. “Silvopasture systems combine trees, livestock (ruminants like cattle, sheep and goats) and grazing,” he writes. As the former director of America’s own Los Alamos nuclear weapons lab in New Mexico, he has visited North Korea’s test site four times. “By closing the nuclear test site,” Hecker argues, “Pyongyang took a step considerably beyond a nuclear testing moratorium. Although North Korea could surely excavate and prepare new tunnels, having to start over or complete an existing tunnel complex for testing would cost time and money.

Source: Washington Post June 01, 2018 19:52 UTC