Depends on whether the crisis results in war or not. If it does, land is very hard to move or recover. See, it's almost 100 years past World War 2 and some pro

Depends on whether the crisis results in war or not. If it does, land is very hard to move or recover. See, it's almost 100 years past World War 2 and some property disputes are still alive... So it can be a part of a strategy but not whole of it. Especially any undeveloped land is extra problematic. (It will fall to whoever developed it by law most of the time, requiring a buy out at most.) And if the emergency is something requiring immediate liquid assets land is especially worthless. There are many such emergencies.