China argued it was "maintaining peace and stability," while the U.S. condemned any move that "destabilizes the region and threatens stability in the Taiwan Strait."
Chinese General Wang Weixing argued that if reunited with Beijing, Taiwan would retain significant political, economic and diplomatic independence.
Scientists analyzed the 2011 Japan earthquake to better understand the global carbon cycle.
Researchers discovered vegetation and wildlife thriving on the newly formed island.
Russia and China's efforts to boost bilateral ties have also drawn other regional powers, but Asia's complex political dynamics meant there were no clear alliances.
The Chinese military said the drills "cultivate the willingness and capability of the two militaries to carry out disaster relief operations."
The popularity of the Asia-Pacific region is set to explode, experts say.
Ben Hodges spoke of "an increasingly tense relationship and increasing competition in all the different domains."
While Trump was "in no rush," he said talks with Kim Jong Un would likely take place "in the not-too-distant future."
The official Korean Central News Agency published a commentary Tuesday criticizing Japan's reported decision to boost regional cyber capabilities in its western district.
"China is not an enemy, but it is certainly an adversary of the United States," the Pentagon said in a report released this week.
South Korean President Moon Jae-in said his country "must overcome this division for our survival and prosperity" ahead of his first trip to Pyongyang.
Do U.S. military bases make the Asia-Pacific a safer place, or are they raising the prospects of war?
China claimed the disputed Spratly Islands as its own and told a U.S. Navy spy plane flying over to "avoid any misunderstanding."
China wants to join Southeast Asian countries for regular war games that don't include the U.S., according to a draft document seen by the AFP.
The world's most heavily fortified border is seeing a rare period of diplomacy between its rival neighbors.
As Trump expands relations with Taiwan, China is stepping up threats to reclaim the island by force.
The J-20 fifth-generation heavy stealth fighter brings China into a class only occupied by the world's leading military powers: the U.S. and Russia.
A Chinese military report said "the U.S. armed forces have failed to live up to Trump's expectations" due to "scandals like ship collisions, drug abuses and rapes."
The Chinese Defense Ministry said "it is impossible to shake China's determination to safeguard its sovereignty and security interests."
China is rapidly gaining on the U.S. lead in Asia, but its quick growth requires more energy. That's where Russia comes in.
The Naval Strike Missile is a top candidate for the Navy's littoral combat ships, which critics have said may not stand up to Russian and Chinese power.