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 Iran should wave the white flag of surrender
Pentagon chief says ceasefire with Iran is not over
US and Iran launch new attacks as they wrestle for control of Strait
Israeli strikes kill two Palestinians in Gaza, medics say
Blast at fireworks factory in China's Hunan kills 26, Xi calls for probe
