Yes, Iran’s problem was they didn’t develop nuclear weapons.

The lesson all countries will take from Ukraine, Iran, and North Korea is: develop nuclear weapons.

Ukraine and Iran both don’t have nuclear weapons and they were both attacked by countries that do. North Korea does have them and they are apparently in no danger of being attacked.

North Korea's nuclear capabilities isn't what kept them from being attacked. It was Seoul being in artillery range and the refugee crisis on the chinese border that would result.

> North Korea does have them and they are apparently in no danger of being attacked.

North Korea was never in danger of being attacked anyway. They don’t need nuclear weapons to flatten Seoul. The only country capable of invading NK is China, and they benefit much more from NK remaining buffer zone.