Diplomatic ties between Chile and Bolivia have long been shaped by the territorial dispute rooted in the 1879 war, and the trip by President José Antonio Kast to La Paz on Friday, 16 October marks the first state-level visit of its kind in seven decades.
According to documentation held by the International Court of Justice, a formal declaration of war issued by Chile against Peru and Bolivia on 5 April 1879 set off the War of the Pacific, a conflict through which Chile came to hold Bolivia's coastal territory. Under the terms of a ceasefire reached in 1884, administrative control over the seized coastal territory passed to Chile. Under the 1904 Treaty of Peace and Friendship, that territory was assigned to Chile on a permanent and unconditional basis, according to the agreement's terms.
Under Article VI, the ruling notes, Bolivia was extended what the treaty described as the broadest and most unrestricted right to move goods commercially through Chilean territory and its ports along the Pacific coast. According to Mario Rojas, who heads Camex, roughly four out of every five tonnes of Bolivian export freight moves through ports on Chilean soil.
On 15 April 1962, a formal break in diplomatic ties between Bolivia and Chile took effect, prompted by a dispute over how Chile had drawn upon the waters of the Lauca River, as documented in the ICJ judgment. Diplomatic relations at ambassadorial level were re-established following a face-to-face encounter between Hugo Banzer and Augusto Pinochet at Charaña on 8 February 1975, according to El Deber. According to the judgment, Bolivia brought diplomatic ties to a halt once more on 17 March 1978, pointing to what it described as an absence of movement on Chile's part at the negotiating table. Diplomatic ties between the two nations have since been limited to consular-level representation, with neither side posting a full ambassador.
That August 1955 encounter marked the last time a Chilean head of state had travelled to Bolivia on an official presidential visit, with Ibáñez del Campo making the trip as a reciprocal gesture following Víctor Paz Estenssoro's earlier journey to Arica. Out of that January trip came a treaty on economic complementation.
On 24 April 2013, Bolivia brought its dispute before the International Court of Justice, contending that Chile holds an obligation to enter into good-faith negotiations over granting Bolivia sovereign access to the Pacific Ocean. Two procedural milestones shaped the case: Chile's preliminary objection was turned aside in September 2015, and a decision on the substantive questions followed in October 2018. A tally of 12 votes in favour against 3 opposed led the body to conclude that no binding obligation on Chile's part to negotiate sovereign access had been established. The statement noted that bilateral talks conducted in a neighbourly spirit remained open to both parties.
Opinión reported that Evo Morales, the former president, told listeners on Thursday that any failure to put the sea question on the table at the meeting would amount to a betrayal of the nation.
On 29 January, Kast held talks with Rodrigo Paz in Panama in his capacity as president-elect, with the meeting producing a statement from Kast that bilateral commerce between the two nations was performing at a high level, according to a television news outlet. A visit to Santiago placed Paz at Kast's inauguration ceremony on 11 March, where a proposal for collaboration on mining matters was put forward, according to Correo del Sur.
On 23 April, the two foreign ministers — Francisco Pérez Mackenna and Fernando Aramayo — held their encounter at the Chungará–Tambo Quemado border crossing, with the meeting confirmed through a broadcast news outlet. Emol reported that on 8 October, Pérez Mackenna and Bolivia's Héctor Huanca formalised an arrangement covering two distinct aims: the sharing of intelligence on drug trafficking routes and the protection of legitimate trade from disruption.
According to reporting by El Deber, Fernando Aramayo — Bolivia's Minister of the Presidency — indicated that the 11-point agenda had been finalised back in December. Trade data compiled by Bolivia's IBCE institute and published by El Deber show that goods sent from Bolivia to Chile amounted to US$2.8 billion between 2000 and August 2026, while purchases flowing in the opposite direction reached US$10.7 billion over the same span. Taken together, those figures point to an accumulated shortfall in Bolivia's public finances of roughly US$7.9 billion.
Windsor Hernani, whose background spans economics and career diplomacy, has argued that ACE 22 — the trade agreement dating to 1993 — has not delivered beneficial outcomes for Bolivia. His position holds that Chile restricts trade flows through a combination of import permits and sanitary conditions placed on incoming goods. According to La Tercera, the draft terms of reference for updating the agreement address areas such as rules of origin, e-commerce, and sanitary provisions — a process the publication describes as distinct from negotiating an entirely new trade deal.
Prospects for mining cooperation and a connection to the Humboldt submarine cable were among the topics Roberto Ruiz, Chile's consul, put forward for discussion. Bolivian timber held at Chilean port facilities became a matter of dispute after local authorities reported finding what they described as prohibited substances there in June, citing La Tercera as the source of that account. No verification of the 108-tonne figure has been provided, and Jorge "Tuto" Quiroga, who previously held the presidency, has called on Chile to produce supporting documentation for that number.
A 24-hour operation at the Tambo Quemado border crossing was put forward by La Paz's departmental chamber of commerce, according to El Deber. As of now, authorities have put forward no updated policy on border crossings.
Around noon in La Paz, four outlets — El Deber, Red Uno, Unitel, and La Tercera — had yet to confirm any finalised text, with La Tercera noting that both the agreements and the joint declaration remained in the process of being formalised. Neither the text of the declaration nor any pledges relating to ambassadors or sea access had been made available to the public.
Whether ambassadors would actually return remains an open question, though a former Chilean consul who served in La Paz told La Tercera that rebuilding diplomatic relations is possible — with Bolivia holding the initiative on any first step. Three matters have yet to be settled: the dispute over timber, Bolivia's assertion of a right to sea access, and its insistence that any agreement address that claim.
