The central question surrounding the second U.S.-DPRK summit seems to be if the outcome may be different this time, and if President Donald Trump and North Korean leader Kim Jong Un may walk away with a more substantive agreement than that which came out of the Singapore summit last June.

This stems from a rocky inter-summit period defined by another round of meeting cancellations, a continuing war of words, and even ongoing disagreements over the definition of denuclearization.