Does US protect Japan?

Who are Japan strongest allies?

Japan has developed strong alliances with a number of countries over centuries, such as the United States, United Kingdom, Australia and New Zealand, South Korea and Taiwan. These alliances were formed during World War II and continue to be in effect today. The US-Japan Security Treaty signed in 1951 is still in effect providing for mutual defense against external threats. The UK-Japan Economic Partnership Agreement (EPA) was signed in 2019 providing for free trade between both countries. Australia and New Zealand cooperate on security issues through joint military exercises such as KAKADU. Japan also cooperates with South Korea and Taiwan on intelligence sharing agreements like FVEY to combat cybercrime threats more effectively together than if they were working separately. China and Russia are not considered strong allies due to their different political ideologies and historical tensions.

Question about Japan

Why can’t Japan declare war?

Japan is one of the most powerful countries in the world, but has not declared war on another nation since World War II. This is due to its 1947 constitution which contains a "Peace Clause" prohibiting such actions, its security alliance with the United States, international pressure from both regional and global powers, potential economic disruption, and public opinion within Japan being overwhelmingly opposed to war. These factors have all led to Japan's commitment to peace and non-aggression in international relations.