“If the principle of ‘one country, two systems’ is being undercut by the security law, this has consequences for our relationship with Hong Kong and China,” Maas said during a visit to his British counterpart, Dominic Raab.

Maas listed concrete measures Germany could implement, including simplified entry regulations for Hong Kong citizens, limiting exports of specific arms goods, scholarships for scientists, journalists or artists at risk through the law as well as ending an extradition treaty with Hong Kong.

The measures, which Germany and France had proposed to other European Union foreign ministers, could also be implemented without the support of the other EU members.

“We want to go forward with as many European states as possible. But Germany will definitely implement the proposals we made together with France,” the minister said.

China’s enactment of a national security law for Hong Kong has stoked fears among pro-democracy activists in the city and condemnation from governments around the world.

Britain, Australia and Canada suspended their extradition agreements with Hong Kong earlier this month amid similar concerns about China’s ruling Communist Party imposing the national security law.