When the world press reacted negatively to incidents including the sinking of two Venezuelan ships and the bombardment of the coast, the U.S pressured the parties to settle, and drew attention to its nearby naval fleet in Puerto Rico at command of Admiral George Dewey. With Castro failing to back down, Roosevelt pressure and increasingly negative British and American press reaction to the affair, the blockading nations agreed to a compromise, but maintained the blockade during negotiations over the details. This led to the signing in Washington of an agreement on 13 February 1903 which saw the blockade lifted, and Venezuela represented by U.S. ambassador Herbert W. Bowen commit 30% of its customs duties to settling claims. When an arbitral tribunal subsequently awarded preferential treatment to the blockading powers against the claims of other nations, the U.S feared this would encourage future European intervention. The episode contributed to the development of the Roosevelt Corollary to Monroe Doctrine, asserting a right of the United States to intervene to "stabilize" the economic affairs of small states in the Caribbean and Central America if they were unable to pay their international debts, in order to preclude European intervention to do so. The revolutionaries, bearing a wound that could not be healed, succumbing finally in July 1903 in the Battle of Ciudad Bolivar after the siege of government army conducted by General Gomez, with which Matos decides to leave Venezuela, establishing itself in Paris.