THE UNITED STATES hovers over the Dominican Republic these days, waiting eagerly for a reward. The reasoning is simple: Everyone sees that the regime of Generalissimo Rafael Leonidas Trujillo Molina is tottering; everyone knows the State Department nudged it a bit; surely, after the crash, the new regime will embrace the nudger. But, in the chaos and anger that will follow the fall, there will be no embrace. The sudden anti-Trujillo policy of the United States and the dramatic condemnation of the Dominican Republic by the Organization of American States (OAS) at San Jose have come too late to avert what State Department planners fear most: an anti-American, Castro-leaning successor to Trujillo. For thirty years, the United States has bolstered the brutal tyranny of El Benefactor. Now that his enemies have him on the run, the United States has jumped to their side. For the final push, this new aid may be accepted and used; but the United States will receive in return only a few cold stares, a polite nod, contempt, smoldering bitterness. However, there are degrees of bitterness and contempt, and the exact character of the post-Trujillo regime will depend on the forces used to overthrow the Generalissimo...