A version of this article first appeared in CNBC's Inside Wealth newsletter with Robert Frank, a weekly guide to the high-net-worth investor and consumer. Sign up to receive future editions, straight to your inbox. Major luxury stocks have fallen 15% or more since the Iran war started, and sales in the increasingly important Middle East market could drop by half, according to analysts. Shares of LVMH and Hermès are down roughly 16% and 20%, respectively, this month, while the S&P 500 has fallen