As we left Tehran, one of the hard drives on our computers was wiped of all its contents as we went through airport security. But, we had a back-up, and in our own memory, we won't forget these four days in Tehran. As the Iranian New Year approaches, Iran hopes that, in the spirit of Nowruz, there will be new beginnings and blessings - in a nation like this, that will mean both change and continuity.

Lyse Doucet '4 Days in Tehran' (bbc)