The CIA's Chinese-language video, published on the agency's YouTube channel on Thursday, appears to target disaffected officers and appeals for information on China's leaders and armed forces.

China's foreign ministry condemned what it called "anti-China forces" and vowed action to protect national security.

"China will take all necessary measures to resolutely combat infiltration and sabotage activities of foreign anti-China forces and resolutely safeguard national sovereignty, security and development interests," foreign ministry spokesman Lin Jian told a press conference when asked about the CIA video.

He did not provide any details on the measures Beijing could take.

The video depicts a fictional Chinese officer deciding to contact the US intelligence agency after concluding that "the only thing leaders are protecting is their own interest" and that "their power is based on countless lies".

It shows the officer at home with his family, then driving past a checkpoint in pouring rain before taking out a laptop in the car and typing on it as he says: "Picking this path is my way of fighting for my family and my country."

Chinese text accompanying the clip appeals for leaks on Beijing's leaders and military as well as other areas.

"Do you have information about high-ranking Chinese leaders? Are you a military officer or have dealings with the military? Do you work in intelligence, diplomacy, economics, science, or advanced technology fields, or deal with people working in these fields?"

"Please contact us. We want to understand the truth," the text says, adding that the CIA can be contacted "securely through our Tor hidden service."

The latest appeal came after the agency released a number of videos last year that its Director John Ratcliffe said were aimed at recruiting Chinese officials.

They are "just one of many ways that we're adjusting our tradecraft", Ratcliffe said.

Beijing condemned the posts at the time as "naked political provocation", saying Washington "not only maliciously smears and attacks China, but also openly deceives and lures Chinese personnel to surrender".