The United Nations’ top court said it will render a decision early next month in a case the Marshall Islands brought against India, Pakistan and Britain “for not abandoning the nuclear arms race.”

The Republic of the Marshall Islands, part of Micronesia, was the location for dozens of nuclear tests between 1946 and 1958.

The government of the archipelago, according to a news report, is calling for the three nuclear powers to take “all necessary measures” to carry out “what it considers their obligations with regard to the non-proliferation treaty on nuclear weapons.”

A 1968 treaty — ratified by London but not Islamabad or New Delhi — “requires countries to pursue in good faith the negotiations on measures for nuclear disarmament,” says the UK-based publication Eastern Eye. “The Marshall Islands contends that India and Pakistan also face this obligation under customary international law.”

The RMI filed its complaint with the International Court of Justice in 2014 against a total of nine countries possessing nuclear weapons. The others are the United States, China, North Korea, France, Russia and Israel.

Eastern Eye reports that the complaint cannot be heard against the other six countries unless they give the International Court of Justice “the green light.”

Learn more about the Marshalls and the nuclear testing in Civil Beat’s series The Micronesians.