Recently, I sent a fax to a hotel in Jerusalem's Old City inquiring about availability for a group. When writing my fax, I took into consideration that the proprietor of the hotel was probably not pro-Israel, so I chose not to include the word Israel in the hotel's address. However, my address is in Israel (i.e. west Jerusalem), so I chose to keep the word Israel in my own address.
Apparently, the distinction wasn't enough for the proprietor of the hotel, because when I received his return fax, he had scribbled Israel out of my address.