Ahead of Trump-Kim summit, here’s a look at North Korea’s missile tests

WASHINGTON ― U.S. President Donald Trump and North Korean leader Kim Jong Un will participate in historic negotiations over North Korea’s nuclear program and the denuclearization of the Korean Peninsula.

As part of these negotiations, the leaders are expected to discuss North Korea’s ballistic missile program, the preferred delivery mechanism for nuclear warheads. Get caught up on some of North Korea’s most important missile tests from 2017:

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North Korea launched a Pukguksong-2, a surface-to-surface medium long-range ballistic missile, at an undisclosed location on Feb. 12, 2017. U.S. President Donald Trump vowed to deliver a strong response to the provocation. (Kim Won-jin/AFP via Getty Images)