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 says interim accord with Iran to end war is 'over'
US launches new strikes on Iran after shipping attacks
Iran targets sites in Bahrain, Kuwait after wave of US strikes
NATO leaders meet in Ankara as US ceasefire with Iran teeters
At least 21 killed in landslide in China's Gansu as rescue efforts end
Cargo plane missing off Karachi coast after navigation problem
Trump says US will lift sanctions on Turkey, heaps praise on Erdogan
Suspect in Monaco bombing found dead in Ukraine
