Iran has announced an end to its cooperation with the International Atomic Energy Agency (IAEA), a significant development in international relations. The impact and implications of this decision could be far-reaching and affect global policies and decisions linked with nuclear energy and safety. The diplomatic and political consequences of this move, especially regarding international nuclear safety regulations and Japan's position, are yet to be fully comprehended.

Japan maintains a balanced and cooperative relationship with Iran, and this development could impact bilateral relations due to Japan's heavy reliance on nuclear energy. There's a possibility that it could affect Japan's position in international nuclear safety discussions. Japan, having experienced the effects of nuclear disasters like the Fukushima incident, values a stringent regulatory framework ensuring nuclear safety.

In the US and EU, such a move would be met with stern repercussions. As countries with established nuclear power programs, they have a more assertive stance on nuclear safety and non-proliferation. They may respond with stricter sanctions on Iran or push for diplomatic negotiations.