Thank you!
Fragment of a discussion from User talk:Ebraminio
Thank you for pointing that out. Blockly can run entirely client-side, but, as you point out, you do need to get the source code. I'm going to talk to the Google Code team to ask if Google is blocking Iran (I thought it was the other way around) and with my tech lead about a github mirror (although I guess I don't need anyone's permission because it's open source). I'll get back to you soon.