Why can’t the U.S. learn to live with North Korea?

Sir: With an imminent regime change should the U.S. invade North Korea in a bid to forcefully rid them of their nukes and topple the government of Kim Jong Un, it will require a lot more than war threats or heavy sanctions (which they’ve grown quite accustomed to) to get the resilient North Koreans to forfeit what seems to be their only plausible lifeline.

No one would hurriedly classify North Korea’s leader as a drunken fool who’s merely aiming to attack America just because his ego said so. Kim Jong Un is fully aware that an attack on the United States will be met with destructive consequences. He isn’t suicidal! The North Koreans are unlikely to use their nukes, unless they run out of options if the U.S. carries out their threat of military action. Waging a war, or tempting the North Koreans to strike first, only endangers the lives of U.S. citizens which are bound to be lost in the event of a North Korean attack.

Why can’t the U.S. learn to live with a nuclear-armed North Korea the same way it has lived with a nuclear-armed Russia, China, India, Pakistan and Israel?
Nimi Princewill.