My friend Robert texted me one day in London: "Angelos, I'm flying to Moscow tomorrow. Can we catch up tonight at the pub to teach me a little bit of Russian?" Initially, I thought..."WTF? Is he serious? What has he been doing all these days?" I know that it takes at least a couple of weeks to get a Russian visa sorted in the Russian Visa Centre in London. So, he definitely didn't decide to fly to Moscow today But then I thought...that's a challenge...