China has accused two Canadian nationals of spying and stealing national secrets.
The men were detained in December following the arrest of Huawei's top executive in Canada for breaching US sanctions on Iran.
The Canadian justice department has now approved the beginning of extradition proceedings for Meng Wanzhou, who is suing the country for "serious breaches" of her civil rights.
North America correspondent William Denselow reports:

Trump cancels US strikes on Iran, citing progress in talks
US confirms third strike on Indian-crewed tankers this week
UK defence minister Healey quits, says PM Starmer's plans fail to keep country safe
False alarm at the Pentagon triggers brief shelter-in-place order
Trump says US will hit Iran 'very hard', take control of energy infrastructure
US and Iran trade attacks for a second day, undermining shaky ceasefire
Bahrain says debris from intercepted Iranian drones injures child, damages homes
Philippines launches probe into deaths of two athletes from top basketball team
