The next 10 years are critical for America to defend itself from China and Russia in cyberspace, says US cybersecurity chief Jen Easterly.

We'll know by then if we've won or lost the battle for tech innovation against Beijing and Moscow when it comes to things like smart cities, she tells Ian Bremmer on GZERO World.

And despite the Russians being a more urgent threat, the long-term race with China to dominate global tech is arguably even more important.