TOKYO (AP) — When President Donald Trump and North Korean leader Kim Jong Un meet in Singapore next month, they will have two very different agendas.

Washington has set the bar for the summit extremely high — complete, verifiable, irreversible denuclearization. Pyongyang has a tall order of its own: the complete denuclearization of the Korean Peninsula, with the precondition that the "hostile policy" of the U.S. toward their country must first end.

If a deal is struck, options range from an unlikely handover by Kim of several nuclear weapons as a sign of sincerity. Short of immediate denuclearization, the U.S. may also push for a freeze on production of bombs, missiles and nuclear material.

Three North Korea experts have also published a roadmap that includes three phases over the next 10 years.