The disputed territory of the Spratly Islands in the South China Sea offers one of the region's major potential flashpoints for the 21st century.

The islands offer few attractions in themselves

Vietnam, Taiwan, Malaysia, the Philippines, Brunei and the superpower of China have all staked overlapping claims in whole or in part around the Spratly region.

All, apart from Brunei, occupy one or more of the islands backed up with military installations and the area is stage to frequent tense stand-offs between the competing parties.

Rich rocks

War in the Spratlys could have global consequences

Now it wants it back.

Most of the islands are low-lying coral reefs and rocky outcrops, home to little more than a few sea birds. Some are so small they disappear at high tide, whilst others provide barely enough space for one person to keep their feet dry.

Around the islands are some of the world's richest fishing grounds. And underneath the sea bed there are thought to be massive reserves of oil and gas - both are valuable resources for what has been, at least until recently, an expanding, energy-hungry region.

Of significance to the wider world are the vital sea-lanes that traverse the area, transporting oil Middle Eastern oil to Japan and west coast America. Around a quarter of the world's total shipping trade passes through the area every year.

War in the Spratlys could quickly have an impact on the global economy.

War games

Mischief Reef: Red flag over troubled waters

In 1995 the US naval war college ran a series of computer war games simulating a conflict with China over the South China Sea. In every case Chinese forces won the day.

Strategic analysts view the Spratlys dispute as the result of a so-called power vacuum in post-Cold War East Asia.

Balance of power

China is engaged in rapid military modernisation

The onset of Asia's economic crisis and the drain this places on the resources of China's smaller southern neighbours also seems to point to Beijing's advantage.

Previously the other five claimants - all of whom are members of the Association of South East Asian Nations (Asean) - have been able, at least in diplomatic terms, to take a stand against the might of China. Beijing too had apparently shown a willingness to discuss joint development of the island's resources.

The region straddles vital sea lanes

It may be somewhat less than a coincidence that Beijing has chosen this time to resume construction of what Manila says is a military installation on the aptly named Mischief Reef - an island more than 1,000 km from mainland China but just 300 km from the Philippines.

With China continuing to beef up its armed forces faster than any other country in East Asia, it seems unlikely that Beijing is in any mood to give up its claims.