Mohammad Agha-Soltan: "It's been a long time since I can only remember your face from your photos.

Mohammad Agha-Soltan honors the memory of his sister, Neda Agha-Sultan, who was tragically killed during the 2009 protests, with a heartfelt message and a new photo of her on social media. He wrote: "It's been a long time since I can only remember your face from your photos.

When I close my eyes, I can't create an image resembling you. But there hasn't been a day I haven't remembered you or haven't heard your voice in my ears. You'll always remain my best companion, Neda. I won't come to you until I've avenged you."