Can Trump's China Trip Unlock the Korean Stalemate?

The last time Donald Trump and Kim Jong Un shook hands, the world watched. That was 2019. Since then, the clock on Korean Peninsula diplomacy has been frozen solid — while North Korea's nuclear arsenal has not.

Now, someone is trying to wind that clock again.

Moon Jae-in, the former South Korean president who personally brokered those three Trump-Kim summits, stepped onto the stage at the RAND Corporation in Los Angeles on Friday and made his pitch. "I think Trump's upcoming visit to China could provide valuable momentum to restart the clock for peace on the Korean Peninsula," he told the audience at one of Washington's most influential security think tanks.

The Setup: A Rare Alignment of Variables

The timing isn't arbitrary. Trump is scheduled to visit Beijing from March 31 to April 2 — a visit loaded with significance given the ongoing US-China trade tensions. Moon's argument is straightforward: when the two biggest powers in the region sit across from each other, the Korean question inevitably enters the room. If Washington and Beijing can find common ground, Pyongyang's calculus may shift.

Moon knows this terrain better than almost anyone. He engineered the Singapore summit in June 2018, watched the Hanoi talks collapse in February 2019, and then orchestrated the spontaneous Panmunjom meeting that same June. He was, for a brief window, the most consequential mediator on the peninsula. That window closed. He's now trying to reopen it from the outside.

His message wasn't just directed at Trump. Moon also addressed Kim Jong Un directly, urging the North Korean leader to "have the courage to return to talks." And he acknowledged South Korean President Lee Jae Myung as part of the equation — signaling that a trilateral diplomatic opening may be more coordinated than it appears.

The Problem: Both Doors Are Ajar, But Neither Is Open

On paper, the conditions look almost favorable. At a key Workers' Party congress last month, Kim left the door open to dialogue — conditionally. Washington must abandon its "hostile policy" toward Pyongyang, he said. The White House responded that Trump is willing to meet Kim "without any preconditions." Two sides, two open doors, zero movement.

The gap between those positions is not semantic. North Korea has constitutionally enshrined its nuclear status. It has deployed troops to support Russia in Ukraine. It has systematically dismantled the inter-Korean infrastructure built during Moon's own presidency. The question of whether Pyongyang would even put denuclearization on the table — the core demand of any serious US engagement — remains unanswered.

On the American side, the bandwidth problem is real. The Trump administration is simultaneously managing tariff wars, Ukraine ceasefire negotiations, and Middle East volatility. Korea is not at the top of that stack. And yet — Trump has shown before that he's willing to make bold, unexpected moves when a legacy-defining moment presents itself. Moon is essentially dangling that legacy in front of him: "If Trump opens a new path toward peace on the Korean Peninsula, it would remain a lasting achievement in world history as that of a 'peacemaker.'" That's a calculated appeal to Trump's well-documented desire for historical recognition.

Who's Watching, and What They See

The stakeholders in this diplomatic moment read it very differently. In Seoul, progressives see Moon's intervention as constructive — keeping the conversation alive during a period of relative opening. Conservatives are more skeptical, remembering how the Hanoi summit's collapse left South Korea exposed and the "maximum pressure" advocates vindicated. The 2019 failure wasn't just a diplomatic setback; it accelerated North Korea's weapons development and deepened South Korean public cynicism about engagement.

For Beijing, a revived US-North Korea dialogue channel is a double-edged prospect. China prefers stability on the peninsula, but it also values North Korea as a strategic buffer and leverage point. If Trump uses the China visit to broker a North Korea opening, Beijing may find itself simultaneously facilitating and being sidelined by the process.

For Pyongyang, the calculus is existential. The regime has watched what happened to leaders who gave up their weapons programs. It has also watched what happens to isolated economies. The question is whether Kim believes this moment is different from 2019 — and whether he trusts that any deal reached with Trump would survive the next American administration.