What happened in Mangala, where residents were left with little outside support, helps explain how this outbreak became the worst seen in the Democratic Republic of Congo.

Flávio Bolsonaro, now the favorite to win Brazil’s presidency, would give President Trump a critical new ally in Latin America, particularly on security.

Flávio Bolsonaro’s first round lead leaves President Luiz Inácio Lula da Silva three weeks to find the votes to stop Brazil’s, and Latin America’s, rightward shift.