strategic imbalance. Ibáñez sent notes to the Argentine ambassador in Chile, FélixFrías arguing that the Strait of Magellan is of great importance to Chile,
1963–1966 Santiago del Estero UCRP FélixFrías 1863–1868 Buenos Aires Luis Frías 1874–1883 Santiago del Estero Uladislao Frías 1865 – 1869 1875 – 1878 Tucumán
Bernardo de Irigoyen National Autonomist Party 4 May 1875 5 May 1876 FélixFrías National Autonomist Party 4 May 1876 1 May 1879 Manuel Quintana National