You forget 3 things:
1. If Malaysia becomes a contaminated wasteland, then where the heck will our raw material imports come from? Where will our water come from, if Malaysia becomes a wasteland? Have you ever considered that?
U are still not getting it. This defence posture is called Deterence. It works. Just the possibility that we can turn malaysia into a wasteland deters them from attacking us. Whether we will or not, they will never know. Raw Materials imports? Water? What are u talkign about? If they invade us, we will not have access to these either. So, the point is moot.
This is stuff Singapore depends on for survival. If you turn that country into a wasteland, it'd be an empty victory because the stuff would be unusable, and the majority of the local population would be dead. Then its rendered useless.
If you drop a chemical warhead into Penang, how does it affect us? It will kill hundreds of thousands, but the rest of that country is untouched. Its afight to death, wake up. If they invade us, we waste them simple as that. What empty victory are u talking about? Would u rather have suffered a complete and utter defeat that having your so called empty victory?
2. As if you can kill a political idea by inciting mass genocide. If you look at WWII, and see how Nazis killed 6m, in the end while they did kill so many Jews, after the Nazis were defeated, even with smaller numbers, Jews became more politically powerful in the US, and around the world. They are present in the different major influential areas of social life, from arts to business to politics.
If they successfully invade Singapore, what do you think will happen? They will do genocide on us. They will line up all the Christians and shoot them. Next will be chinese. U are incredibly naive. Are u a schoolboy by any chance?
3. Besides, as you said, it'd increase the defence budget. And a US$5b increase in the defence budget would mean that less money will be set aside for ordinary people and for the local economy- to grow. What exactly is the point of building and storing this stuff when you can't buy enough food to feed the ordinary citizens? You can't expect people to start eating dirty nuclear missiles don't you?