A Chinese Foreign Ministry spokesperson on March 14 urged the United States to act responsibly and provide a thorough clarification regarding its biological military activities.

Spokesperson Zhao Lijian said at a daily press briefing that the United States should also stop standing alone in obstructing the establishment of a Biological Weapons Convention verification regime.

"This will help restore the international community's confidence in the U.S. fulfillment of its international obligations and strengthen global biosecurity," he said.

"Biological military activities in Ukraine are the common concern of the international community," Zhao said, citing information already disclosed about U.S. participation in and funding of biological laboratories in Ukraine that hold lethal pathogens.

The United States has always claimed to be "open and transparent," Zhao said. "If the concerns are truly 'disinformation,' why doesn't the United States release detailed materials to prove its innocence?"

Zhao also asked how the United States spent its funding of 200 million dollars in bio-labs, what kind of research it conducted on pathogens, and why it refuses to open up the bio-labs for independent investigations by international experts, among other questions.

"The U.S. responses so far have been self-contradictory and perplexing," Zhao said.

For decades, the United States readily points fingers at others and accuses others of noncompliance, saying that they should accept verification and even resorting to sanctions and military operations, he said, adding that when it comes to the United States itself, it refuses verification and tries to muddle through.

"This is typical double standard. Moreover, given the credibility of the United States, it is very difficult for it to win the trust of the international community," Zhao said.