Russia requires all foreign visitors to obtain a visa, aka “permission to enter.” Each year I feel like I’m holding my breath until the Fed Ex letter from the Russian Consulate arrives with my passport and visa sticker affixed. Then, I am “sure” I’m going. Before I can apply for a visa, however, I have to get an official “letter of invitation” from an authorized Russian agency. This process involves yet another application, time, money, and the legwork of my faithful friend Tanya in Samara. For a reason yet unknown to me, even after nine years, the agency won’t begin to…