The United Arab Emirates, a strong regional ally, supported the Saudi response to Canada, with a senior government official calling Ottawa's behavior 'unacceptable'.
Local media also reported that the country has been instructed not to transfer its patients to Canada for medical treatment.
Saudi Arabia will withdraw all of its students studying in Canada in an intensifying feud between the two countries. They froze trade with Canada and suspended the scholarships of about 5,000 Saudi students studying in the country. Fifteen of the 19 hijackers were citizens of Saudi Arabia, and Saudi royals have always been accused of complicity in the attack.
Late last week, Canadian officials began publicly pressing the Kingdom to release women's rights activists from around Saudi Arabia, who've been swept up and jailed as Mohammed bin Salman, the crown prince, consolidates his power and cracks down on dissenters.
"The normal diplomatic route would have been to call the ambassador in and to let him know your displeasure and then to try to move from there", MacKay, Canada's foreign affairs minister from 2006 to 2007 and defence minister from 2007 to 2013, said in an interview with BNN.
On Tuesday, Saudi Arabia's main wheat buyer, Saudi Grains Organization (SAGO) said in an email sent to Canadian shippers it had halted all purchases of Canadian milling wheat and feed barley.
"We anticipate the majority, if not all, that are now enrolled are impacted by this decision", she said.
Saudi Arabia doesn't want to be lectured to by the West and they are delivering the message.
Among those arrested was Samar Badawi, whose brother Raif Badawi was arrested in Saudi Arabia in 2012.
Saudi Arabia has been informing customers that it has temporarily scrapped penalties and fees on all upcoming direct flights to and from Toronto, adding it is working to find alternative solutions to the problems. "We are always going to speak up for human rights; we're always going to speak up for women's rights; and that is not going to change", she told reporters in Vancouver on Monday.
Thomas Juneau, an assistant professor at the University of Ottawa's Graduate School of Public and International Affairs, said the Saudis appear to be going "full Qatar" on Canada, referring to the punishment Riyadh inflicted on its tiny Arab neighbour after a falling-out.
The kingdom asked on Monday the Canadian envoy to leave the country and recalled its ambassador from Canada.
Canada has asked its global friends to help end a rift between it and Saudi Arabia.
Yes. In 2015, Riyadh recalled its ambassador to Sweden and stopped issuing work visas for Swedes after the European Union member country's foreign minister described a court decision related to Raif Badawi as "medieval" and the kingdom's ruling Al Saud family as presiding over a "dictatorship".
The sudden deterioration in the Saudi-Canadian relationship is likely grabbing the attention of people in the city of London, Ont., more than anywhere else in the country.