China's decision to impose the new national security law on Hong Kong lies in direct conflict with its international obligations under the principles of the legally binding, UN-registered Sino-British Joint Declaration," a joint
statement released by the four countries said on Thursday.
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The proposed Chinese law would undermine the "one country, two systems" framework, the four allies said in the statement, referring to the arrangement under which Hong Kong, a former British colony, was handed back to China in 1997.
"Hong Kong has flourished as a bastion of freedom," the US and allies said, adding their "deep concern regarding Beijing's decision to impose a national security law in Hong Kong".
Police stand guard on a road to deter pro-democracy protesters from blocking roads in the Mong Kok district of Hong Kong on Wednesday [Isaac Lawrence/AFP]
China's parliament on Thursday
rubber-stamped legislation after months of pro-democracy protests in Hong Kong that were started by plans for an extradition bill that would have allowed suspects to be sent to the mainland for trial.
The vote in Beijing was 2,878-1 with six abstentions, in line with the high-profile but largely ceremonial body's custom of near-unanimous support for all legal changes decided by the ruling Communist Party.
The law will be added to Hong Kong's mini-constitution, or Basic Law, to require the territory to enforce measures to be decided by the NPC's standing committee, a small body controlled by the governing party that handles most legislative work.
China says the legislation will aim to tackle secession, subversion, "terrorism" and foreign interference in the city but the plan, unveiled in Beijing last week, triggered the biggest protests in Hong Kong for months.