Former Brazilian President Bolsonaro Returns From Florida Exile

BRASÍLIA—Brazil’s conservative former president, Jair Bolsonaro, returned to the country Thursday for the first time since his rival, President Luiz Inácio Lula da Silva, took office in January, vowing to bolster opposition to the leftist government.

The 68-year-old army captain-turned-politician, who hasn’t yet conceded defeat to Mr. da Silva in October’s presidential elections, had been hunkered down in Florida since his term came to an end in late December.