Castro's rule was marked by frequent rebellions, the murder or exile of his opponents, his own extravagant living, and trouble with other nations. Castro was characterized as "a crazy brute" by United States secretary of state Elihu Root and as "probably the worst of Venezuela's many dictators" by historian Edwin Lieuwen. His nine years of despotic and dissolute rule are best known for having provoked numerous foreign interventions, including blockades and bombardments by Dutch, British, German, and Italian naval units seeking to enforce the claims of their citizens against Castro's government.