Looking at the pictures shown on TV channels they do not seem to be businessmen. Why they were hiding their faces in front of camera. This whole thing does not look like a businessmen trip to Russia. It is more like a human smuggling endeavor. This may be the reason Moscow airport authorities did not allow them to enter the country. Usually for this type of business trips a local business organization or a tour operator sponsor such visits. What was required to be done to trace and track that local sponsor in Russia. Nobody talked about that nor any effort was done. Pakistani TV news channels just made noise. This was their breaking news. Noise does not produce any useful output or add any value to the solution.
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