Sargassum covers the coast of Tulum, Mexico, Thursday, July 30, 2026. (AP Photo/Fernando Llano) (AP Photo/Fernando Llano)
Sargassum covers the coast of Tulum, Mexico, Thursday, July 30, 2026. (AP Photo/Fernando Llano) (AP Photo/Fernando Llano)
Parishioners wearing a birdlike costumes dance in the annual procession honoring 16th-century St. Francis Solano in Emboscada, Paraguay, Friday, July 24, 2026. (AP Photo/Jorge Saenz) (AP Photo/Jorge Saenz)
Parishioners wearing a birdlike costumes dance in the annual procession honoring 16th-century St. Francis Solano in Emboscada, Paraguay, Friday, July 24, 2026. (AP Photo/Jorge Saenz) (AP Photo/Jorge Saenz)
Brazilian Sen. Flavio Bolsonaro, right, handles an oversized pair of scissors, accompanied by Argentina's President Javier Milei during the Liberal Party convention where Bolsonaro was confirmed as the party's presidential candidate, in Sao Paulo, Saturday, July 25, 2026. (AP Photo/Ettore Chiereguini) (AP Photo/Ettore Chiereguini)
Brazilian Sen. Flavio Bolsonaro, right, handles an oversized pair of scissors, accompanied by Argentina's President Javier Milei during the Liberal Party convention where Bolsonaro was confirmed as the party's presidential candidate, in Sao Paulo, Saturday, July 25, 2026. (AP Photo/Ettore Chiereguini) (AP Photo/Ettore Chiereguini)
Spectators avoid a charging bull during a traditional Toros Populares festival in Pillaro, Ecuador, Thursday, July 30, 2026. (AP Photo/Dolores Ochoa). (AP Photo/Dolores Ochoa)
Spectators avoid a charging bull during a traditional Toros Populares festival in Pillaro, Ecuador, Thursday, July 30, 2026. (AP Photo/Dolores Ochoa). (AP Photo/Dolores Ochoa)
A janitor wipes chairs at the Universidad Santiago de Cali auditorium, where President-elect Abelardo de la Espriella will be inaugurated, in Cali, Colombia, Wednesday, July 29, 2026. (AP Photo/Santiago Saldarriaga) (AP Photo/Santiago Saldarriaga)
A janitor wipes chairs at the Universidad Santiago de Cali auditorium, where President-elect Abelardo de la Espriella will be inaugurated, in Cali, Colombia, Wednesday, July 29, 2026. (AP Photo/Santiago Saldarriaga) (AP Photo/Santiago Saldarriaga)
Brazilian President Luiz Inácio Lula da Silva pretends to examine World Health Organization Director-General Tedros Adhanom Ghebreyesus with dental equipment during a visit to the Andaraí Hospital in Rio de Janeiro, Brazil, Tuesday, July 28, 2026. (AP Photo/Bruna Prado) (AP Photo/Bruna Prado)
Brazilian President Luiz Inácio Lula da Silva pretends to examine World Health Organization Director-General Tedros Adhanom Ghebreyesus with dental equipment during a visit to the Andaraí Hospital in Rio de Janeiro, Brazil, Tuesday, July 28, 2026. (AP Photo/Bruna Prado) (AP Photo/Bruna Prado)
Police patrol by a U.S. donated Mamba armored military vehicle in the Marconi neighborhood of Montevideo, Uruguay, Sunday, July 26, 2026. (AP Photo/Matilde Campodonico) (AP Photo/Matilde Campodonico)
Police patrol by a U.S. donated Mamba armored military vehicle in the Marconi neighborhood of Montevideo, Uruguay, Sunday, July 26, 2026. (AP Photo/Matilde Campodonico) (AP Photo/Matilde Campodonico)
A billboard depicting the late leader Fidel Castro and reading "Homeland or death, we will defeat!" is seen during an event marking the 73th anniversary of the start of the Cuban Revolution in Pinar del Rio, Cuba, Sunday, July 26, 2026. (AP Photo/Ramon Espinosa) (AP Photo/Ramon Espinosa)
A billboard depicting the late leader Fidel Castro and reading "Homeland or death, we will defeat!" is seen during an event marking the 73th anniversary of the start of the Cuban Revolution in Pinar del Rio, Cuba, Sunday, July 26, 2026. (AP Photo/Ramon Espinosa) (AP Photo/Ramon Espinosa)
Dominican Republic's Symbol Sanchez competes in the men's platform preliminary diving event at the Central American and Caribbean Games in Santo Domingo, Dominican Republic, Wednesday, July 29, 2026. (AP Photo/Fernando Vergara) (AP Photo/Fernando Vergara)
Dominican Republic's Symbol Sanchez competes in the men's platform preliminary diving event at the Central American and Caribbean Games in Santo Domingo, Dominican Republic, Wednesday, July 29, 2026. (AP Photo/Fernando Vergara) (AP Photo/Fernando Vergara)
Fog covers the community of El Limon, Panama, the site of the proposed Rio Indio Reservoir, Sunday, July 26, 2026. (AP Photo/Matias Delacroix) (AP Photo/Matias Delacroix)
Fog covers the community of El Limon, Panama, the site of the proposed Rio Indio Reservoir, Sunday, July 26, 2026. (AP Photo/Matias Delacroix) (AP Photo/Matias Delacroix)

Keiko Fujimori was sworn in as Peru's president, a victory that confirmed a regional shift in South America toward the conservative wing.

Mexico said it will address the growing problem of sargassum, a brown seaweed that has quadrupled in the Mexican Caribbean this year and poses a threat not only to the environment but also to tourism.

Argentina's President Javier Milei accused Brazilian President Luiz Inácio Lula da Silva of being a "thief" and a "delinquent," among other things. Milei was in Sao Paulo for an event where Brazilian Sen. Flávio Bolsonaro, a son of former President Jair Bolsonaro, was confirmed as the presidential candidate of his father's party.

This gallery was curated by chief photographer Eduardo Verdugo based in Mexico City.