CHINA -VIETNAM : PLAN PEACE

China and Vietnam agreed Monday to avoid conflicts in the hotly contested South China Sea, as new pathway to dialogue on easing tensions was opened with Southeast Asia nations.

The communist neighbors have long sparred over the sea, through which $5 trillion in shipping trade passes annually and which is believed to sit atop vast gas reserves.

Hanoi and Beijing agreed Monday to keep the peace in the sea, the countries said in a joint statement during a state visit to Hanoi by Chinese President Xi Jinping.

They agreed to ''well manage disputes at sea, make no moves that complicate or expand disputes, [and] maintain peace and stability on the East sea,'' the Vietnamese version of the statement said. using Hanoi's terms for the waters.

China claims nearly all of the sea, even approaching the coats of its neighbors. It is also partly claimed by the Philippines, Malaysia, Brunei and Taiwan in addition to Vietnam.

China has in recent years built artificial islands and airstrips capable of hosting military installations in contested areas to cement its claims, inflaming tensions with its neighbors.

Relations between China and Vietnam hit a low in 2014 when Beijing moved an oil rig into waters claimed by Vietnam, sparking weeks of protests.

There have been two armed conflicts between China and Vietnam in the sea -brief clashes in 1974 and 1998 that claimed the lives of dozens of Vietnamese troops.

On Sunday, US President Donald Trump offered to help Vietnam resolve the long term simmering tensions.

''If I can help meditate, or arbitrate, please let me know........I am a very good mediator,'' Trump said on his own state visit to Hanoi at the tail-end of his marathon tour  of Asia.

Vietnam offered no response.

And China, which has long insisted the United States has no role to play in the dispute, spoke out against what it deemed foreign interference.

''We hope the non-regional countries can respect the regional countries' efforts in maintaining the regional stability of the South China sea, and play a constructive role this aspect.'' Foreign ministry spokesman Geng Shuang said.