In 1939, I didn’t hear war coming
theguardian.com
theguardian.com
Wikipedia has a good etymology section on the term if you are interested: https://en.wikipedia.org/wiki/Welfare_state#Etymology
These are not phrases I'd expect to hear from a Millennial.
Harry seems to have been writing as part of the Guardian for at least 4 years, I think hes most likely adopted practices that can better connect to modern audiences.
The tensions are too big and there is no way for most countries to reduce that pressure because the main choices have been delegated to EU by treaties.
It's a similar problem that Germany had after WWI with war reparations and economic crisis. It weakened the hability of the elites to handle the situation.
That's something like that we have now.
It used to be that these wars were more of a concern and on the news and would spark attention from more than just the countries involved especially given the areas they are in such as Ukraine, Syria, etc.