Pope John XXIII
Mater et Magistra §171
Mater et Magistra: On Christianity and Social Progress
171 There is also a further temptation which the economically developed nations must resist: that of giving technical and financial aid with a view to gaining control over the political situation in the poorer countries, and furthering their ownplans for world domination.
Source: Mater et Magistra (Vatican.va)