UN General Assembly
1965

45. For that reason it is justifiably concerned about the claim sometimes made that circumstances of the moment may require a return to the old formula of unhappy memory, namely, that countries can, by themselves and by the use of force, solve the problems resulting from the violation of those principles. Such an attitude is self-contradictory because it is not possible to punish a violation of International law by the use of procedures violating the principles which have been infringed and which are the very principles Invoked as the reason for punishment. 46. We cannot Ignore — and I made reference to this In my statement to this Assembly last year [1295th meeting] — the new forms of indirect aggression which run counter to the principle of non-intervention and are characterized by the assistance given by some States, in the form of material resources, money, armaments and propaganda, to armed groups that have infiltrated into other countries to help bring about the downfall of institutional forms of government which were freely adopted.