While I am talking of the Australian experience, I am sure that the questions I have just posed are equally applicable to defence planning in other countries.
Since the end of the Cold War, the range of tasks for which defence forces have been used has widened significantly, and the demands on their resources have increased.
It is likely that the Australian Defence Force will continue to be tasked for a wide range of demanding operations, as we have done over the past few years.
Having addressed the strategic fundamentals, the next question is how to design our defence force.
The aim of our defence planning is to select a set of capabilities that gives Australia the widest range of military options to support our strategic interests, at an affordable cost.
In planning our defence we start with the realisation that our defence force is only one part of Australia's wider approach to ensuring our security and prosperity.
Now I would like to talk about our new entity Defence Science and Technology Agency (DSTA) which I briefly spoke about during the Second IAPS(P) Seminar in Seoul, Korea.
The Ministry of Defence is by all accounts a very large ministry in Singapore.
As a result, Defence Science and Technology Agency, which evolved primarily from the former Defence Technology Group (DTG) was formed on 15 Mar 2000.
Defence Science and Technology Agency's mission as enshrined in the DSTA Act is "To harness science and technology to meet the defence and national security needs of Singapore."
Defence Scientific and Technology Agency is also the adviser to MINDEF on science and technology matters and is also responsible to promote defence science and technology in Singapore.
Third, the defence research and development (R&D) arm of MINDEF and Defence Scientific Offices National Laboratories, which was corporatised in April 1997, is now brought under the ambit of DSTA as an affiliate company.