Prior to this conflict, another conflict over nearby islands led to a breakdown in relations between Argentina and Chile. For 10 points each:
[10e] Name this dispute between the United Kingdom and Argentina over namesake islands. Chile supported the United Kingdom in this conflict, whose islands are still claimed in the Argentine Constitution.
ANSWER: Falklands War [or Guerra de las Malvinas]
[10m] This conflict nearly led to war following the failure of a Court of Arbitration and an Argentine invasion of Chile, Operation Soberanía. This conflict’s namesake channel flows through the Tierra del Fuego near the Strait of Magellan.
ANSWER: Beagle conflict [accept Beagle Channel]
[10h] The Beagle Conflict was resolved after this president held a plebiscite in which Argentina voted for a Vatican-mediated treaty. This Radical Civic Union leader was the first president elected following Argentina’s return to democracy.
ANSWER: Raul Alfonsín [or Raul Ricardo Alfonsín]
<Jacob Hardin-Bernhardt, World History>