Digital surveillance programs require concrete data centres; intelligence agencies are based in real buildings. Surveillance systems ultimately consist of technologies, people, and the vast network of material resources that supports them.

Looking out at the photographic landscape that surrounds us - the world of images and image-making that we inhabit - it seems obvious that photography has undergone dramatic changes in its technical, cultural, and critical composition.

The dragon is a very consistent symbol of secret satellite iconography and signals intelligence satellites.

If we look in the right places at the right times, we can begin to glimpse America's vast intelligence infrastructure.

It's hard to tell with these Internet startups if they're really interested in building companies or if they're just interested in the money. I can tell you, though: If they don't really want to build a company, they won't luck into it. That's because it's so hard that if you don't have a passion, you'll give up.

Israel stands proudly at the forefront of international achievement. The world's leading corporations - Google, Intel and Motorola, to name but a few - maintain research and development facilities here, and our technology start-ups continue to be acquired by the likes of AOL, eBay and IBM.

In truth the social media elements of the Obama campaign, while extremely innovative, did not produce a lot of results.

We've had a digital revolution, but we don't need to keep having it. And I'd like to look after that, to look what comes after the digital revolution.