I'm writing this from somewhere in Europe. Sunday morning, I will board a plane* bound for Israel’s Ben Gurion International Airport. Organizers of the “Welcome to Palestine” campaign tell me that more than half the passengers on my flight will be international activists. UPDATE: According to reports in international and Israeli media, hundreds of flights scheduled to land in Israel Sunday have already been cancelled. According to Haaretz, 60 percent of the 1,500 activists who planned to fly to via Lufthansa, Jet2 and Air France have received notice from the airlines of their flights being cancelled. Hundreds are still expected to…