The highly rated Tomahawk cruise missiles have been deployed by the US for years, and even the British military has purchased them for defense.
The premise of the Nuclear Non-Proliferation Treaty has collapsed. Threatened by North Korea and others, Japan needs a new approach to nuclear deterrence.
The targets for counterstrikes are likely to include enemy launch and related sites, such as anti-aircraft radar and airfields, if Japan is attacked.
The Prime Minister should convince the public of what is required for the defense of Japan and the level of spending required to accomplish it.