Recent reports have surfaced detailing undisclosed nuclear drills conducted by the US military in the Okinawa region of Japan during the 70s, at the height of the Cold War era. Unearthed documents reveal the use of 'simulated' nuclear bombs in these secret training sessions, presenting potential implications on past and present Japan-US diplomatic relations. The disclosure has invited mixed feelings and reactions among the Japanese populace and its government officials.

Given Japan's sensitive history with nuclear weapons, this revelation might stir controversy and resentment among people. The practice of nuclear drills, in particular, by foreign forces on Japanese soil, could be seen as a direct disregard of Japan's three non-nuclear principles - not possessing, not producing, and not permitting the introduction of nuclear weapons. This incident might have ramifications on the relations between Japan and the US, which has been maintaining military bases in Japan under the US-Japan Security Treaty.

Compared to the US or EU, where military exercises involving nuclear simulations might be seen as a necessary deterrent strategy during the Cold War, such drills are particularly scorned in Japan due to its history. The presence of US military bases and operations are more scrutinized and often meet opposition in Japan as opposed to their largely unquestioned acceptance in NATO countries in the EU.