Japan may officially allow the United States to bring nuclear weapons into the country if an emergency threatens national safety, Foreign Minister Fumio Kishida hinted Friday.

Speaking to a Diet committee, Kishida outlined certain exceptions to Japan's long-held principles of not possessing, producing or allowing nuclear weapons on its territory.

The Cabinet of Prime Minister Shinzo Abe has maintained the position held by previous administrations, Kishida said in response to questions from former Foreign Minister Katsuya Okada, a senior member of the Democratic Party of Japan, the main opposition force.