Following his historic meeting with North Korean dictator Kim Jong Un, Trump tweeted: “There is no longer a Nuclear Threat from North Korea.” Although Trump and Kim may have agreed to work towards denuclearization, recent satellite images showing ongoing work at nuclear sites demonstrates that the initial agreement needs to be supported with clear and well-defined commitments from North Korea. The White House seems to understand this as well, as last week, the declared “national emergency” was extended due to North Korean missiles.

Trump’s efforts to sit down with Kim Jong Un were a step in the right direction, but the meeting did not, by itself, force North Korea to give up its nuclear capabilities. For Trump’s pledge to become a reality, the Trump administration must push Kim to a strict timeline of denuclearization with benchmarks that can be monitored. Without such a commitment, the agreement Trump and Kim signed in Singapore is meaningless.