There are many other different TYPES of war, which are far more impactful than conventional war.
Sun Tzu alluded to most of them 2500 years ago
Although clearly he couldn't short sell and hence crash an adversary's government bonds, as such things weren't around back then.
Similarly, the US dollar system, which has remained since Tricky Ricky Nixon, renaged on the Bretton Woods agreement, is another historically recent target. If a more attractive alternative to US dollars can be offered, then the massive overseas holdings of dollars for activities like oil trading, will find their way home to the last place on earth where they have any purchasing power... More paper money chasing the same goods, usually results in a hyper inflation.
Saddam was willing to accept Euros for oil, he got invaded and hanged. Khadaffi was proposing a gold dinar for oil trading, he received airstrikes in support of a revolution, and got buggered with a broomshank.
Russia, China and India are not so easily dealt with, and are cooperating on replacing dollar hegemony with their own paper money. They will be able to print their own purchasing power at virtually zero cost, just as the united state has since WWII.
For some examples of what I think
@void is referring to
First of all, the Fabian manifesto of 1884 (100 years before Orwell's fictional 1984 is set)
Check (?Czech) out Jan Kozac's "and not a drop of blood is shed". This was pretty much the playbook for the Czech and Slovak communists taking over the post WWII democracy and subverting it into a one party state.
Also the writing and interviews of Yuri Bezmenov / Thomas Schuman (same person), a KGB operative who defected and settled in Canada, becoming a journalist and broadcaster.
The BBC timewatch documentaries describing operation Gladio, if they are still available on YouTube etc, describe actual verified historical examples of manipulating and inciting patsies into committing terrorist acts in Europe, from the 1960s through to the 1980s.
In terms of defence
A look at either of Bush the dumber's wars, and their continuation by the big 0, is instructive.
In both cases, the state was taken within weeks. That is the easy bit.
In neither case, can the people be considered to have consented to the occupation or to the current puppet regimes.
In both cases, a variety of groups are competing to gain the levers of coercive power, and the parasitic living that those levers give access to.