We've been afraid something like this would happen for a long time. The Russian military is coming apart at the seams. Some units haven't been paid for over a year. It was only a matter of time before there was a major security breach.
The Kremlin is taking a huge gamble in using RAINBOW for this operation. The only people who know about this are the president and a few of his closest aides. If this operation is botched, it'll bring down the government.