Alliances are transmission belts of war.
So our Founding Fathers taught and the 20th century proved.
When Britain, allied to France, declared war on Germany in 1914, America sat out, until our own ships were being sunk in 1917.
When Britain, allied to France, declared war on Germany, Sept. 3, 1939, we stayed out until Hitler declared war on us, Dec. 11, 1941.
As the other Western powers bled and bankrupted themselves, we emerged relatively unscathed as the world’s No. 1 power. The Brits and French lost their empires, and much else, and ceased to be great powers.
Link is here.