Vietnam

The dispute over the South China Sea, one of the most complicated geopolitical issues of the 21st century, keeps heating up. China, Taiwan, Malaysia, the Philippines, Vietnam and other regional governments are all part of the dispute — along with the United States.

Here are four key things to know about the dispute.

1. What's At Stake

The South China Sea holds immense resources, from the oil and gas located underneath the seabed to the lucrative fishing it has afforded for generations.

Financial commentator Greg Heberlein has just returned from a vacation in Vietnam and Cambodia. While there, he couldn't help but notice how westernized the Southeast Asian economy is becoming.