(CNN) As the Syrian government recaptures increasing amounts of territory in the southwest and other regions of the country, Western allies have grown increasingly concerned about the safety of a group of unarmed volunteer rescue workers known as the White Helmets.

The fate of some 1,000 volunteers and their family members, and the need to plan a possible evacuation for them, has become a focus of discussions of several countries, including the United States, United Kingdom, France and Canada, according to a diplomatic source familiar with the subject and two administration officials.

In the plans under discussion, the volunteer rescue workers, who are officially named the Syrian Civil Defense, would be resettled in several countries; two diplomatic sources mentioned the possibility of resettling some of the group in Canada and the United Kingdom, while another two sources said Germany is expected to take some rescuers.

President Donald Trump discussed the possible need to evacuate members of the group during his meetings at the NATO summit last week, a source confirmed. There were several conversations between the US and UK about the issue during the summit, the source said, adding that Western delegations have convinced the US to help lobby both Israel and Jordan to find escape routes for besieged rescuers.

CBS News first reported the discussions about the possible evacuation plans.

Read More