Kim's missile program is proceeding rapidly and inexorably to ICBM thermonuclear capability;  Iran & Pakistan are not far behind.

All three of these fascist, tyrannical regimes loathe the West in general and the US & Israel in particular.

The Soviet Union/Russia & and China could be deterred because they had rational leaders who appreciated the devastation of war.

Kim is a certifiable lunatic who believes that the Kim dynasty produces infallible living gods destined to rule the world through the power of racially superior Koreans.

Iran and Pakistan have a radical Islamic ax to grind with the West, especially Israel and the US.

Taken together these three regimes pose a much greater threat to civilization than Hitler, Tojo, and Mussolini ever did.
The fascists in the 1940s could kill tens of millions.

Armed with thermonuclear weapons the fascist regimes in the 21st-century could easily wipe out humanity.

Yet there is little interest and no good missile defense.

Que sera, sera.