“These are the guys you send in because you want to break stuff,” said Mark Galeotti, an expert on Russian security services. Here’s a look at the Russian military intelligence unit that has captured the attention of Western intelligence. Evolution of An Intelligence Unit The GRU -- whose official name is the Main Directorate of the General Staff of the Armed Forces of the Russian Federation -- is not a new entity. It’s been around for decades, operating first in parallel with the KGB and then, after the Soviet breakup, with the KGB successor agencies: the Federal Security Service and...