Comparing the given answers with existing intelligence, officials make a judgment call, according to Ukraine Today.

A security service official said that family ties led to some militants abandoning their positions, as their relatives would stay behind in the government-controlled areas.

The official also argued more fighters want to defect but unfortunetly, don't have the necessary means. 

See’s video section for more of the latest news from Ukraine in video from Ukraine Today, Ukraine’s 24-hour English-language news channel.