Over what time scale? I'm not advocating military action--I don't know nearly enough to have an informed opinion--but it seems to me that military action could cost lives now, but save countless innocent North Koreans in the generations to come. One can think back to the Second World War and consider what the cost of inaction would have been there. Concentration camps should not exist and if all other avenues have been exhausted, at what point does one have to accept the risk of dying to end them?
I don't live in South Korea, nor do I have family there, so I understand that words like this are easy for me and I don't pretend otherwise. This isn't our decision to make in the West. But there's something about standing by and doing nothing that just seems unconscionable to me. Are sanctions really going to stop this? And now they have nuclear weapons too? Can this ever get better without getting worse first?