Every single set of predeployment briefing for US troops includes local body signal briefings when appropriate, such as the thumbs up example given, pointing wi

Every single set of predeployment briefing for US troops includes local body signal briefings when appropriate, such as the thumbs up example given, pointing with index finger, using the right vs left hand for certain actions, bowing, and anything else the State Department and/or CIA has recognized. Very few people in these briefings remember them, mostly because there's another thousand things being blasted at you that are arguably more relevant to survival and success. I say this to agree: Mossad would definitely recognize and brief people on this, but retention of training can never really be guaranteed.