Gifted of tongue and pen, the internationally known Bishop Sheen turns his special talents to championing a cause which is closest to his prime interests -- promoting the cause of missions all over the world. As national director of the Pontifical Society of the Propagation of the Faith, he speaks with authority. His television facility at citing pertinent analogies to dramatize a point is used again to tremendous advantage as he exhorts the faithful to be more cognizant of the importance for Christ which the missions hold. His forcefulness relates immediacy of the place of the missions to all problems of the world for the serious- minded individuals. The urgency of his plea for all that needs to be done in the missions commands respectful hearing. Bishop Sheen's advocacy of long standing for a recognition by Western man of the sleeping Giant -- the East -- and the necessity of winning it for Christ is repeated here in what might sometimes be termed ""desperate"" tones. How foreign policy, foreign aid and the missions are all interlinked is made clear. In Missions and the World Crisis the articulate and effective Bishop Sheen will win many converts to the cause he pleads so well.