Ever since international investigators concluded that the South Korean naval ship Cheonan, which sank in March with the loss of 46 lives, was struck by a North Korean torpedo, China has been under growing pressure to condemn its close friend and ally in the United Nations Security Council.

The report was issued May 20, just days before top American officials arrived in Beijing for high-level strategic and economic talks. U.S. Secretary of State Hillary Clinton called on China to take part in joint action to deal with the latest North Korean challenge.

This past weekend, Chinese Premier Wen Jiabao was in South Korea to take part in a summit meeting involving China, Japan and South Korea. There, he came under pressure to endorse the findings of the international investigators, but said that China had not yet made up its mind on the issue and would make a judgment on the evidence in an "objective and fair manner." He promised that Beijing would not protect the guilty party.