- Obama was to meet with the South Korean President instead
- Duterte says he is "not answerable to anyone except the Filipino people"
Vientiane, Laos (CNN)Philippines President Rodrigo Duterte is expressing regret after his obscenity-laden rant against President Barack Obama prompted the White House to cancel planned bilateral talks between the two leaders.
In his comments, Duterte referred to an infamous US massacre in the southern Philippines.
The US acquired the Philippines from Spain as a result of the 1898 Treaty of Paris, which brought an end to the Spanish-American War.
Filipinos rose up against the US, waging a war that ended in 1902. But some of the Moro population -- a Muslim group in the south of the country -- continued to reject US rule, in what is known as the Moro Rebellion.
In 1906, an infamous battle took place in the volcanic crater of Bud Dajo on the southern island of Jolo.
US forces, equipped with firearms, routed the Moros, who used traditional weapons, leaving hundreds of them dead and only a handful of survivors.
The US's military victory proved a public relations disaster when it was revealed that women and children were among those killed.