Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Did China Block Vietnam Offshore Oil Contract? Ralph Jennings TAIPEI, TAIWAN - The sudden cancellation of an offshore drilling project commissioned by Vietnam is raising fears that the Chinese government pressured it to stop, part of Beijing's ongoing maritime sovereignty spat with Hanoi. London-based drilling contractor Noble Corp. said July 9 its Noble Clyde Boudreaux semi-submersible had cancelled a previously announced project with Vietnam. News reports placed the drilling site off Vietnam's east coast in a zone watched by Chinese survey vessels. It's unclear whether officials from Beijing forced the cancelation, but they have pressured other Vietnamese seabed oil drilling contracts in the past. The two countries contest nearby tracts of the broader South China Sea. "They're playing some kind of cat and mouse with China," said Oh Ei Sun, senior fellow with the Singapore Institute of International Affairs. If, he said, "they're doing drilling here and the Chinese vessel came, they might stop it for a few days or months and then resume it, and so on." Brunei, Malaysia, the Philippines and Taiwan also claim all or parts of the 3.5 million-square-kilometer waterway, which is prized for fisheries as well as fossil fuel reserves. China says about 90% of the sea should come under its flag. Beijing has taken a military lead over other countries over the past decade. Radio Free Asia reported July 13 that Vietnam had cancelled the contract as the Chinese government squeezes Southeast Asian nations that try to exploit South China Sea resources with foreign partners. A Chinese coast guard vessel is "patrolling" now near another Vietnamese oil rig, the report says. .