If the United Nations once admits that international disputes can be settled by using force, then we will have destroyed the foundation of the organization and our best hope of establishing a world order.

This quote is referring to the idea that the United Nations should not support the use of force to settle international disputes. The underlying message is that if the United Nations allows countries to use force to solve disputes, then the main purpose of the United Nations – which is to promote peace and create a world order – will be destroyed. This is because settling disputes with violence usually only results in continued unrest and destruction, rather than creating a lasting peace.