China is embroiled in territorial disputes over an oil rig close to Vietnam and the arrest of Chinese fishermen in the Philippines, alarming its Southeast Asian neighbors.
Vietnam disputes China's right to drill for oil in waters that lie within Vietnam's exclusive economic zone. The Philippines has detained Chinese fishermen accused of collecting protected turtles.
As part of his four-country tour of Asia, Obama will visit the Philippines Monday. He's expected to highlight the importance of security cooperation and the Philippines' strategic role in the region.
Reconstruction aid is arriving in Tacloban but its mayor is sparring with Philippine President Benigno Aquino. Both are scions of rival political families.
Emergency relief aid poured in immediately after Typhoon Haiyan hit the Philippines. But as the UN turns to long-term recovery, there is little money floating around.
Workers are dealing with massive heaps of debris from typhoon Haiyan, a record storm that hit The Philippines five weeks ago. A push is under way to get schools in affected areas open soon.
Typhoon Haiyan sparked renewed debate over how much food aid should be sourced locally.