International inspectors were not allowed to witness the experiment, as Washington has prevented access to its test site since the late 1990s.
Wednesday’s test is twenty-seventh American “subcritical experiment” since full-scale nuclear weapons tests were halted in 1992.
Iran has strongly condemned the US for carrying out a nuclear test in Nevada this week, saying the move threatens world peace and shows a hypocritical set of double standards set by Washington when it comes to nuclear research.
The Iranian Foreign Ministry said the Wednesday detonation proves that US foreign policy relies heavily on the use of nuclear weapons, disregarding UN calls for global disarmament, PressTV reports.
The experiment also drew criticism from Japan, with Hiroshima Mayor Kazumi Matsui wondering why the Obama administration carried out the test, despite saying he would “seek a nuclear-free world.”
The test, known as Pollux, was conducted in the US state of Nevada on Wednesday to ensure that Washington “can support a safe, secure and effective stockpile” of nuclear weapons.
The test proves that the US “could use nuclear weapons anytime,” said Hirotami Yamada, who heads the Nagasaki Atomic Bomb Survivors Council.