There are concerns Philippines' notorious corruption will siphon resources, hamper long-term recovery, but President Aquino voes to fight graft, plans top-level oversight.
All of Bangkok has now been placed under Internal Security Act, under which police can close roads, impose curfews and carry out searches.
Thailand is facing escalating political tensions as tens of thousands of anti-government protesters have turned out in Bangkok, pressing the government to resign.
Prime Minister Shinzo Abe visited Cambodia last weekend, vowing financial support to Prime Minister Hun Sen to help promote human rights and democracy.
The RCEP is a deal between Asean nations and the governments of Australian, China, India, South Korea and New Zealand, and groups together about $17 trillion in annual GDP.
President Obama's national security adviser says U.S. remains committed to re-balancing security, economic issues in region.
The UN also called on the country to improve education and create more full-time jobs for young people to stop them from emigrating.
While aid is reaching some remote areas, authorities are having difficulty sustaining regular deliveries; official death toll stands at 3,974