What's unprecedented? And since when? USA has been invading places and pushing their empire for decades. Maybe you mean unprecedented in your (short?) lifetime?
What’s unprecedented in the context of the past 50 years is undermining NATO, getting cozy with the Russians at the expense of allies, making territorial advances at the expense of allies, politically and economically attacking EU, enacting protectionist economic policies and granting unlimited White House access to Qatar and Saudi Arabia.
What’s unprecedented in the context of the past 50 years is undermining NATO, getting cozy with the Russians at the expense of allies, making territorial advances at the expense of allies, politically and economically attacking EU, enacting protectionist economic policies and granting unlimited White House access to Qatar and Saudi Arabia.