U.S. President Donald Trump skipped the plenary session of a summit of East and Southeast Asian leaders in Manila on Tuesday because of scheduling delays, but he said his marathon trip to the region had been a success.
Trump also said his trip had resulted in at least US$300 billion, possibly triple that figure, of deals being agreed.
Trump said he planned to make a "major statement" about his trip from the White House later this week, and spoke of the "many good friends" he made during the trip.
Mr Duterte, who has spoken highly of Mr Trump, said last week he would tell the U.S. president to "lay off" if he were to raise accusations of rights violations.
When Mr Trump was asked if he would raise human rights at the meeting, Mr Duterte said: "Whoa, whoa. Human rights briefly came up in the context of the Philippines' fight against illegal drugs", Sanders said.
US President Donald Trump and Philippine President Rodrigo Duterte during a bilateral meeting at the Philippine International Convention Center in Pasay City on November 13, 2017.
Trump was among 20 foreign leaders in the Philippines for the summit, his first visit to the country as president.
Modi says Trump "has expressed a very high opinion of India" in his travels.
At the start of the ASEAN-only meeting, Duterte said issues he expects participants to discuss include threats posed by "non-traditional security issues" to the peace and stability and prosperity of the region.
Prime Minister Jacinda Ardern will tell the Philippine president there have been too many killings in his war against drugs.
Secretary of State Rex Tillerson would attend Tuesday's summit in his place, a senior White House official said, adding the event was running too late.
Trump is teasing a "major statement" on trade and North Korea in Washington on Wednesday when he returns.
He jointly met with Australian Prime Minister Malcolm Turnbull, with whom he had a contentious phone call last winter, and Japanese Prime Minister Shinzo Abe, who hosted the president in Tokyo earlier in the trip.
"In my view", he told The Times, "President Trump has been fueling North Korean crisis by conducting fierce verbal attacks against North Korea's Kim Jong-un intentionally".