China should not doubt the U.S. commitment to defend its Asian allies and the prospect of economic retaliation should also discourage Beijing from using force to pursue territorial claims in Asia in the way Russia has in Crimea, a senior U.S. official said on Thursday.

Daniel Russel, President Barack Obama’s diplomatic point man for East Asia, said it was difficult to determine what China’s intentions might be, but Russia’s annexation of Crimea had heightened concerns among U.S. allies in the region about the possibility of China using force to pursue its claims.

“The net effect is to put more pressure on China to demonstrate that it remains committed to the peaceful resolution of the problems,” Russel, the U.S. assistant secretary of state for East Asia, told the Senate Foreign Relations Committee.

Russel said the retaliatory sanctions imposed on Russia by the United States, the European Union and others should have a “chilling effect on anyone in China who might contemplate the Crimea annexation as a model. . . .”

Russel termed the deployment of large numbers of Chinese vessels in its dispute with the Philippines in the South China Sea “problematic” and said that Beijing had taken “what to us appears to be intimidating steps.”

“It is incumbent of all of the claimants to foreswear intimidation, coercion and other non-diplomatic or extra-legal means,” he said.

Image: President Barack Obama and Chinese President Hu Jintao, January 19, 2011 (photo: White House)