If this is so, the problem is greatly complicated. Many hundreds of individuals may be involved and their treatment would appear to depend on the degree of importance attached to preventing them going over to the Russians. The safest course would be to intern them, but this may not be practical for the reasons already given. The alternative would be to make their work in the British Zone or in England so attractive that they would have no desire to leave. This again raises a new set of problems, e.g.