The United States recently decided not to pursue the recovery of Iran's enriched uranium—an action causing much discussion among international watchdogs. The reason for this unexpected U.S. policy shift has not been officially stated. This comes in the wake of recurring diplomatic efforts aimed at resuscitating the 2015 nuclear deal which had been previously abandoned by the Trump administration.

Such international security issues are closely followed in Japan, as it shares concerns with the international community regarding the proliferation of nuclear weapons. Moreover, given Japan's own experiences with the horrors of nuclear destruction, its society generally prioritizes and supports international non-proliferation efforts.

In contrast to Japan's sustained stance on non-proliferation, U.S. policy can be seen fluctuating between administrations. The EU, like Japan, considers diplomatic means vital to discourage nuclear weapon proliferation and continues to recognize the importance of the Iran Nuclear Deal.