castro had offered bonds at 4.5% interest over twenty years to u.s. companies, but u.s. ambassador philip bonsal requested the compensation up front and rejected the offer. a minor amount of $1.3 million, was paid to u.s. interests before deteriorating relations ended all cooperation between the two governments. the u.s. established a registry of claims against the cuban government, ultimately developing files on 5,911 specific companies. the cuban government has refused to discuss the compensation of u.s. claims and the u.s. government continues to insist on compensation for u.s. companies.