Watch video: Why Donald Trump's mouth is the greatest threat to both Koreas

The president's over-the-top threats have made war seem like a real possibility. And war would be catastrophic

In policy terms, the Trump administration has approached North Korea largely the same way the Obama administration has – with a heavy reliance on sanctions, appeals to China, and occasional threats.

As John Feffer explains in this short video, the primary difference is that Trump’s threats have been far more alarming, raising concerns in South Korea and beyond that war is a real possibility, despite the fact that experts universally regard it as the worst possible option. These threats are especially dangerous on a peninsula where U.S. wartime actions left an indelible impression on both sides of the DMZ.

There remains, however, a diplomatic alternative, which the Obama administration never seriously pursued. Can Trump change course?

Video by Victoria Borneman and Peter Certo.