Students march to defend public education and support Brazilian President Luiz Inacio Lula da Silva, who is running for a fourth term, ahead of the presidential runoff election in Rio de Janeiro, Wednesday, Oct. 7, 2026. (AP Photo/Silvia Izquierdo)

Students hold defaced images of presidential candidate Sen. Flavio Bolsonaro as they march to defend public education and support Brazilian President Luiz Inacio Lula da Silva, who is running for a fourth term, ahead of the presidential runoff election in Rio de Janeiro, Wednesday, Oct. 7, 2026. (AP Photo/Silvia Izquierdo)

A demonstrator wears the red star of the Worker's Party during a student march to defend public education and support Brazilian President Luiz Inacio Lula da Silva, who is running for a fourth term, ahead of the presidential runoff election in Rio de Janeiro, Wednesday, Oct. 7, 2026. (AP Photo/Silvia Izquierdo)

Students carry a sign that reads in Portuguese: "Brazil is not the backyard of the U.S." as they march to defend public education and support Brazilian President Luiz Inacio Lula da Silva, who is running for a fourth term, ahead of the presidential runoff election in Rio de Janeiro, Wednesday, Oct. 7, 2026. (AP Photo/Silvia Izquierdo)

Students march to defend public education and support Brazilian President Luiz Inacio Lula da Silva, who is running for a fourth term, ahead of the presidential runoff election in Rio de Janeiro, Wednesday, Oct. 7, 2026. (AP Photo/Silvia Izquierdo)

President Donald Trump listens as Elon Musk speaks to reporters at the White House in Washington, Tuesday Sept. 29, 2026, after meeting with top executives of AI firms. (AP Photo/Jacquelyn Martin)

Bulgarian authorities take an injured crew member to a hospital after two commercial vessels were attacked in the NATO member's Black Sea economic zone on Tuesday, Oct. 6, 2026, Varna, in what was the first such attack on shipping in the area. (Bulgarian News Agency via AP)

Bulgarian authorities take an injured crew member to a hospital after two commercial vessels were attacked in the NATO member's Black Sea economic zone on Tuesday, Oct. 6, 2026, Varna, in what was the first such attack on shipping in the area. (Bulgarian News Agency via AP)