Philippine President Rodrigo Duterte says his government is working on a $1.46 billion upgrade to the navy, which lags the strength of Asian peers.
Karens say road work and the planned hydropower dams breach the ceasefire agreement.
Advocates hope the US will confront North Korea on its widespread human rights abuses during the expected nuclear summit, but an agreement to increase economic cooperation also offers avenues for engagement.
Some see the move as but the latest example of flip-flopping by President Donald Trump, others necessary to get China to reconsider its trade practices.
New Prime Minister Mahathir Mahathir Mohammad looks to reduce national debt in review of China-backed projects, but says ties 'will flourish'.
PM Mahathir Mohamad makes no apologies as he prepares to tackle debt and institute changes.
Beijing accuses the Trump administration of flip flopping after agreeing to avoid trade sanctions on $50 billion of Chinese goods.
Summit between President Donald Trump and North Korean leader Kim Jong Un was set for June 12 in Singapore but US president called it off last week.
Promise comes after US last week disinvited China from major military exercise.
Visit comes as US is battling opioid abuse emergency that is killing more than 60,000 people annually.
Brazen and aggressive - secret report allegedly accuses China of widespread interference in Australia.
Tough negotiations lie ahead as North Korea has rejected unilateral disarmament, calling instead for complete denuclearization of the Korean peninsula.