Reinhold Niebuhr, noted writer and authority on International Affairs, lectured Saturday night under the auspices of the Post-War Council in Winthrop Common Room on the subject of "Christianity and Power Politics."

Niebhur presented many interesting ideas concerning post-war readjustment. In asserting that is was impossible for America to stay out of foreign affairs after the war, he also made it clear that she was not prepared for future world policing.

Future peace, Niebuhr said, would depend upon the co-operation of intergovernmental groups, where labor and agricultural elements in one nation would join with those of other countries in a common objective.

The speaker is head of the Union Theological Seminary and contributing editor to "Nation".