Douglas Todd: Foreign student suicides rising, but authorities silent

International students in Canada and around the world are not only under pressure to achieve high grades. Many are increasingly expected to become permanent residents in their chosen country so they can eventually sponsor their parents and siblings as immigrants.
Given the intense expectations placed on many young students navigating existence in a foreign country, reports of suicide among them are rising in Canada, the U.S., Australia and Britain, their most sought-after destinations.
The China