I am tempted to go one step further. Equip these hypothetical nuclear submarines with nuclear missiles.
We live in an uncertain corner of the world. China is a great power, modernising its armed forces. A nuclear North Korea is run by a regime at least some of whose members should be in an asylum - a very dangerous country. Indonesia is a stable, democratic friend at the moment, but what if it was taken over by a radicalised, Islamic government?
It is time to divert more money and serious thought to our national defences. If we were equipped with just two or three nuclear missile-firing submarines, it would be a tremendous deterrence to anyone messing with us.
Who knows how long, or even if, we can rely on the US nuclear umbrella? If North Korea, with its nuclear missiles, decided to make an example of us as an American ally, would the US risk
nuclear war with North Korea on our behalf? Maybe, maybe not.
We do not need to become a major nuclear power. We only need to be a small, but credible, one. With a couple of Australian missile submarines lurking in the Pacific, able to flatten Pyongyang, or anywhere else, if necessary, we become dangerous to mess with.
We might accordingly be left alone.
Tony Abbott deserves to be listened to seriously.