What to watch: Trump's crucial minute draws near

Kim's late-night tour of Singapore. Photo: Nicholas Yeo/AFP/Getty Images

President Trump has said he’ll know within one minute whether North Korean leader Kim Jong-un is serious about denuclearization. That first minute is rapidly approaching.

What to watch: The hours leading up to the starting gun have been an exercise in expectations setting. Secretary of State Mike Pompeo was careful to note that while the summit is historic, its aim is to “set the conditions for future productive talks.” But even he can’t predict what will happen when the two leaders sit down, one-on-one, in just a couple of hours.