"We cannot in the present circumstance partake in the dispute. The dispute has to be resolved through peaceful negotiations. And any action that impedes a peaceful solution cannot be condoned."
Collure said Communist Parties of both countries had friendly relations with his party.
China is claiming land around the Paracel Islands, in the South China Sea, or the East Sea as Vietnam calls it.
China sent an oil rig to the disputed waters and a fleet of ships to protect it last month. At least one unarmed Vietnamese fishing vessel has been rammed by a Chinese ship, the smaller country has said.
"China has once again endangered the security and stab