I, personally, have an agenda, and I’ll admit to it. I think the world has a lot of bad actors that are unwilling to adhere to accepted order. Russia has already invaded Ukraine. China is increasingly aggressive in the Pacific, and there is a very good strategy proposed for them wrt Taiwan- a naval blockade. What would the U.S. do, if that happened? Also, Iran has been destabilizing the ME for well over a decade. Russia, China and Iran have an alliance, an axis, based on mutual opportunism. Each sees opportunities to further their own goals by weakening or distracting the west (the US) in the other theatres.
My agenda is that I would like to see US foreign policy emphasize deterrence by increasing the defense budget. We are entering a new Cold War, and winning it will require a commitment. I agree with the old answer, from the first Cold War, in regards to how much the U.S. should spend on defense- “enough to keep us out of a war and not one dollar more”.