It's like saying sanctions will make N. Koreans or Russians rebel against their governments, and then wondering why none of them has done so, "are they cowards?". As if rebelling is so simple and not a life-changing thing...
There is a small window of opportunity to make this right. That window will be gone soon and then we would be in the N. Korean situation. Rebellion must be done early and enthusiastically. Each passing month makes it more and more difficult, in part due to boiling frog situation.
You don't live in North Korea, not even anywhere close. If you don't want to live in a state like North Korea, you need to use the democratic means you still have to make your voice heard. I am tired of this lazy defeatism
Luckily since USA is close to N. Korea your statement holds true. Glad to be not American.
Curiously enough if you do a survey of who of Kim Jong-Un and Donald Trump would be more likely to throw a world-threatening tantrum.. I don't think Kim Jong-Un is going to win that survey.