Editorials.

On June 26, the United Nations (UN) celebrates its twentieth anniversary. In more ways than one Vietnam is today's Spain. It is a proving ground for the world's, foremost military power, with far more force at its disposal than all the Axis powers combined could boast in 1938. A large section of mankind is divided into two hostile groups. The UN machinery has worked when there was a general will to make it work, as in Cyprus and the Sinai Peninsula. Nowhere have its failures been total, not even in the Congo. But it cannot do the impossible, and in this respect Americans have a special responsibility.