Pope John XXIII
Pacem in Terris §86
Pacem in Terris: On Establishing Universal Peace in Truth, Justice, Charity, and Liberty
86 The first point to be settled is that mutual ties between States must be governed by truth. Truth calls for the elimination of every trace of racial discrimination, and the consequent recognition of the inviolable principle that all States are by nature equal in dignity. Each of them accordingly has the right to exist, to develop, and to possess the necessary means and accept a primary responsibility for its own development. Each is also legitimately entitled to its good name and to the respect which is its due.
Source: Pacem in Terris (Vatican.va)