North Korea has tested nuclear weapons multiple times since 2006 and has built an arsenal of nuclear-capable ballistic missiles, including ICBMs capable of reaching the U.S. mainland. U.S. policy has cycled between strategic patience, "maximum pressure" sanctions, and direct diplomacy — including Trump-Kim summits in 2018-19 that produced no concrete denuclearization framework.
The current strategic picture is shaped by deepening North Korea-Russia ties (including reported munitions transfers for the war in Ukraine) and North Korea-China alignment. North Korea has formally repudiated unification with South Korea and labeled it a "hostile state," and continues missile testing and military exercises.
Debates center on whether complete denuclearization remains a realistic goal, whether interim arms-control measures (freezes on testing or production) could reduce risk, the role of sanctions and humanitarian carve-outs, and U.S. alliance commitments to South Korea and Japan including extended deterrence.