North Korean leader Kim Jong Un “ordered” his officials to search for the body of the South Korean government worker shot and killed by DPRK soldiers last September, according to South Korea’s National Intelligence Service (NIS).

But even if this is an attempt to deescalate tensions on the Korean peninsula, North Korea still simultaneously built up its arsenal: At an NIS briefing on Tuesday, lawmakers said that the DPRK is now working on two submarines capable of launching ballistic missiles — on top of the new, provocative ICBM revealed during the country’s massive Oct. 10 military parade.