President Donald Trump declares he is "waiting" to see if North Korean leader Kim Jong Un will again "engage in constructive dialogue." Trump opened the door for diplomacy Thursday just hours after he canceled a summit with Kim scheduled for next month in Singapore.

But he insisted that Kim reach out, placing the blame on the North Korean leader for the collapse of negotiations. He also said that until that happened, tough sanctions on Pyongyang would continue and the U.S.-led "maximum pressure campaign is continuing."

Trump and Kim had been slated to meet June 12 for what White House officials had hoped would be a historic diplomatic breakthrough for the president. They advised that the summit could be rescheduled. We evaluate US strategy towards North Korea and what does that mean for future relations.

With files from the Associated Press.

Guests:

Mike Mazza, research fellow in foreign and defense policy studies at the American Enterprise Institute (AEI), a Washington-based conservative public policy research institute; he focuses on US defense policy in the Korean Peninsula, as well as the Asia-Pacific region; he tweets

Mike Fuchs, former deputy assistant secretary of state for East Asian and Pacific Affairs and a Senior Fellow at Center for American Progress (CAP), a Washington-DC based left-leaning research think tank; he tweets