I was in Nepal during that time in 2015. I was in my hotel when they started their testing in deep Mountains which cause a massive earthquake as a result. It was some European countries with North Korean who successfully tested and they came up with new math that this explosion will release heat instead of the storm of electromagnetic influence on the surface. These few countries were digging whole for at least 10 years in different parts of this country without proper authority from the Govt. of Nepal. They tested at least a month which made water hot on different waterfalls in Nepal, which also doesn't have any radiation on surface of Nepal.
The world was told that it was an earthquake. This experiment was successfully tested and has a threat to world.