SEOUL—The mysterious calls and text messages reach the phone of North Korean defector and activist Huh Kwang-il a few times a month. “Are you having fun these days?” read one recent text. The calls, from unknown Chinese numbers, offer only background noise. Mr. Huh says he believes the culprit is North Korea—which diplomats, South Korean government...

Source: Wall Street Journal August 15, 2020 12:00 UTC