US lawmakers urge end to decades-old science and tech agreement with Beijing to curb Chinese military advances

US lawmakers have called on Washington not to renew a four-decade-old science and technology cooperation agreement with China that they claim has likely developed knowledge threatening United States interests, including balloon and agricultural technologies.

According to analysts, if the agreement was ended it would be proof of Washington's attempt to decouple from Beijing and would spark a forecast of an even more fragmented, as opposed to globalised, scientific research environment.

In a letter submitted to US Secretary of State Antony Blinken on Tuesday, 10 Congress members, including chairman of the select committee on China Mike Gallagher, urged the administration not to extend the agreement after it expires on August 27.

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Gallagher's 24-strong committee dedicated to China was created in January and focuses on economic and security competition with Beijing.

Known fully as the "Agreement between the United States and the People's Republic of China on cooperation in science and technology" (STA), the pact was signed in 1979 under then US president Jimmy Carter to "strengthen friendly relations between both countries", among other objectives.

"We are concerned that the [People's Republic of China] has previously leveraged the STA to advance its military objectives and will continue to do so," the letter stated, adding that there had been reports suggesting research partnerships organised under the scheme "could have developed technologies that would later be used against the US".

The lawmakers accused Beijing of using a "balloon technology" - similar to the one jointly developed by the US' National Oceanic and Atmospheric Administration and the China Meteorological Administration under a STA project - to "surveil US military sites on US territory".

Agricultural technologies, on which the US and China have "a dozen active research projects", was also an area of concern for the Congress members, after Chinese President Xi Jinping called on his country to boost self-reliance in agriculture technology.

At March's "two sessions", China's annual parliamentary gathering, top leaders highlighted the need to ensure stable and safe supplies of grain and other important agricultural products, with the aim to establish the country as a great agricultural power by the middle of this century.