A London-based research group has invoked a now-defunct European pact on coal and steel to suggest forming a coalition of countries that would share control of the Strait of Hormuz.
The activist, Sonam Wangchuk, started his strike last month as part of a protest over educational mismanagement that has affected millions of students.
The aid workers were on the frontline in the fight against the outbreak in the Democratic Republic of Congo and have shown no symptoms, their employer said.