This op-ed originally appeared in TIME, Jun. 13, 2018.

The handshake between President Donald Trump and North Korean leader Kim Jong Un will go down in history. But it’s not yet clear if the summit will produce an equally historic outcome on denuclearization.

This op-ed originally appeared in the Bulletin of Atomic Scientists

Ahead of US President Donald Trump’s summit with North Korean leader Kim Jong-un, we spoke with young people around the world who saw hope in the summit, and a chance to advance their own work—including the reunion of families divided by conflict, the peaceful reunification of the Korean Peninsula, and a negotiated agreement that would lead toward the denuclearization of North Korea.

On the morning of June 12, 1982, as the sun shined down on the green grass in Central Park, people began to gather carrying signs for nuclear disarmament. Throughout the morning, buses arrived from around the country. By the afternoon, nearly every blade of grass was covered. Citizens filled second, third, fifth, sixth, seventh, and Madison avenues. By mid-afternoon, the police estimated that over 750,000 people were in Central Park demanding an end to nuclear weapons. By the end of the day, that number had swelled to 1 million.

The International Atomic Energy Agency (IAEA) released its quarterly report on Iran’s nuclear program June 6, and, unsurprisingly, the report found that Iran is complying with its commitments under the multilateral deal known as the Joint Comprehensive Plan of Action (JCPOA).

Joint Commission Discusses U.S. Withdrawal

Representatives from the P4+1 and Iran met in Vienna May 25 to discuss the implementation of the nuclear deal known as the Joint Comprehensive Plan of Action (JCPOA) after U.S. President Donald Trump reimposed sanctions and withdrew from the agreement.

In his May 21 speech at the Heritage Foundation, the new U.S. Secretary of State, Mike Pompeo, defended Trump’s decision earlier this month to violate the 2015 multilateral nuclear deal with Iran, withdraw from the agreement, and pursue a “better deal.”

The Nuclear Deal Minus the United States?

For years the disheveled YAL-1 Airborne Laser baked in the Air Force Boneyard in Tucson, Arizona. Stripped of its chemical laser and turbofan engines, its airframe became a skeletal albatross—a monument to the futility of laser-based missile defense. But in 2014, it was unceremoniously destroyed, and the Defense Department wiped the failure from its memory.