Trump has 'warm rapport' with Duterte

President Donald Trump has developed a friendly relationship with Philippine President Rodrigo Duterte from the two leaders' telephone conversations and exchanges of letters.

"I think there's a warm rapport there and he's very much looking forward to his first in-person meeting with President Duterte," a US official told reporters during a background briefing on Trump's November 3-14 trip to Asia.

Duterte is known for his often profanity-laden tirades against the United States, chiding Washington for treating the Philippines "like a dog", despite the two nations' longstanding relationship.