At the White House, President Trump further explained his decision and said the U.S. military is standing by if necessary.
"If and when Kim Jong Un chooses to engage in constructive dialogue and actions, I am waiting. In the meantime, our very strong sanctions, by far the strongest sanctions ever imposed, and maximum pressure campaign will continue as it has been continuing," Trump said.
According to a senior White House official, here's the timeline of what went down in recent months and days leading up to the president's decision:
On March 8, 2018 a South Korean delegation traveled to the White House to request President Trump meet with North Korea's Kim Jong Un. During that time period and in the weeks following, North Korea agreed to denuclearization and understood joint military exercises between the United States and South Korea would continue. President Trump accepted the invitation to meet.