At a glance, this week's Kim-Trump summit meeting in Hanoi, held to foster progress toward the denuclearization of North Korea, generated few tangible victories — despite U.S. President Donald Trump's boasts of the "tremendous" achievements he had expected.

The two leaders didn't sign any joint statement despite earlier media buzz suggesting they would. No agreement was reached on dismantling any nuclear facilities, a road map for how to move forward or Washington's demand for the full declaration of dozens of secret nuclear and ballistic missile facilities in North Korea.

But top officials in Japan immediately welcomed Trump's decision not to seal any deal with North Korea this time.