Complex sentence: This concept rests on the notion that the defence of the country cannot rely only on the regular armed forces, but other government agencies, private sector organisations and all Singaporeans are to be involved in an effort to deal with security threats facing Singapore.
Split into simpler sentences: This concept rests on the notion that the defence of the country cannot rely only on the regular armed forces. Thus the concept declares that government agencies, private sector organisations and all Singaporeans are to be involved in an effort to deal with security threats facing Singapore.