I have agreed with and admired Roubini for years (ever since I barely escaped the property bubble collapse in time thanks to Wendy and folks here), and I am now also ever more impressed by Zeihan, and this interview of him by the Commonwealth Club is outstanding, the best of his that I have come across. He presents his world persepctive quite fully.
Not surprisingly I remain overwhelmingly invested in bare land and housing where rich people want to live, and probably will want to live as the world cooks. I also have emergency precious metals, a scattering of private investments in high tech California start ups, and my longest held and never to be sold oil and gas working interests.
As an aside, if you are interested in Ukrainian history see this episode from a stunning series of lectures by Timothy Snyder at Yale:
It is extremely timely, and if you like it you should plunge into the entire brilliant and erudite lecture series.