It is not the Soviet Union or indeed any other big Powers who need the United Nations for their protection. It is all the others. In this sense, the Organization is first of all their Organization and I deeply believe in the wisdom with which they will be able to use it and guide it. I shall remain in my post during the term of my office as a servant of the Organization in the interests of all those other nations, as long as they wish me to do so.

Summary

This quote suggests that the United Nations is not primarily needed by powerful countries like the Soviet Union, but rather by smaller nations. The speaker believes that the organization belongs to these smaller nations and trusts in their ability to utilize and lead it wisely. The speaker, implied to be serving in a leadership role within the organization, expresses their commitment to continue in that position for as long as the smaller nations desire, indicating their dedication to serving the interests of these nations within the United Nations.