Rhodes, who agreed the talks could 'tense', said Obama had focused all of his comments on human rights and had told Hun Sen that Cambodia has 'much further to go on that set of issues'.

But Hun Sen responded that concerns over human rights were exaggerated and Cambodia had a better record than many countries, U.S. and Cambodian officials said.
There was also a stark difference between the president's welcome in Cambodia and Myanmar, where tens of thousands of people had lined city streets with American flags to cheer his motorcade.
The president's motorcade then drove to the East Asia Summit at the Diamond Island Convention Center, where President Obama met with world leaders including Indonesia's President Susilo Bambang Yudhoyono, Brunei's Sultan Hassanal Bolkiah and China's Prime Minister Wen Jiabao.
The visit was the last stop on his four-day trip to Southeast Asia that began in Bangkok.
Many Cambodians also credit their leader with helping the country emerge from the horrors of the 1970s Khmer Rouge reign, when systematic genocide left 1.7 million dead.
During their talks, Obama also addressed holding fair elections next year after Hun Sen's critics say they are heavily skewed in favor of his ruling party, a spokesman said.
Hun Sen also reiterated a request to forgive most of the country's debt of more than $370 million to the United States.
Last year, Cambodia offered to repay 30 per cent of the debt, which they said was a compromise as the money was used by a pro-American government in the 1970s to repress its own people.