US President Donald Trump and North Korean leader Kim Jong-un should never talk to each other on the phone, or through Twitter. Two unpredictable, nuclear-armed egotists are a threat to themselves and to the world, regardless of the size of their buttons.
Fortunately, cooler heads are now communicating between North and South Korea. Still, this is no time for South Korean President Moon Jae-in, nor the international community, to get comfortable with Kim Jong-un.
North Korea flouts international agreements, bolsters its economy through sordid means and is responsible for ghastly

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