Chinese and Philippine ship collision just the latest in a string of South China Sea confrontations

China has been at odds with many other countries in the Asia-Pacific for years over its sweeping maritime claims, including almost all of the South China Sea, a strategic and resource-rich waterway around which Beijing has drawn a 10-dash-line on official maps to delineate what it says it its territory.

Beijing is in the midst of a massive military expansion and has become increasingly assertive in pursuing its claims, giving rise to more frequent direct confrontations, primarily with the Philippines, though it is also involved in longtime territorial disputes with Vietnam, Taiwan, Malaysia and Brunei.

A 2016 arbitration ruling by a United Nations tribunal invalidated Beijing’s claims in the South China Sea, but China did not participate in the proceedings and rejected the ruling.

At stake are fishing rights, access to undersea oil reserves and other natural resources, as well as the possibility of establishing military outposts.

The U.S., a treaty partner with the Philippines, has raised concerns about China's actions and President Joe Biden has pledged “ironclad” support for Manila. That's sparked fears that if an incident escalates, it could spark a wider conflict.

In the latest incident, a Chinese vessel and a Philippine supply ship collided near the disputed Spratly Islands in the South China Sea on Monday. China’s coast guard said a Philippine supply ship entered waters near the Second Thomas Shoal, a submerged reef in the Spratly Islands that’s part of territory claimed by several nations. The Philippine military called the Chinese coast guard’s report “deceptive and misleading.”

Here's a look at some other incidents and developments in recent months:

June 4: Philippine officials say the Chinese coast guard