The Cuban Red Cross was also reorganized, established operations in Europe and supported the Allied forces on the Western Front. The United States declaration of war on Austria-Hungary on December 7, 1917. Panama followed on December 10, 1917 and Cuba would do the same on December 16. In the midst of the diplomatic crisis, caused by the disappearance of the diplomatic baggage of Mexican Ambassador Isidro Fabela, the government of Cuba officially acknowledged the Constitutionalist government of Venustiano Carranza. Federico Jimenez O'Farril presented a handwritten letter of the Cuban president to the Mexican president in which he granted recognition. Despite that diplomatic act, the relationship between the two countries cooled because of the treatment of the Mexican travelers in Havana. Cuba during World War II