The best thing Republicans could do to counter the Bidens and their defeatist trope would be to start educating the American people about the changed nature of "war".
We are fighting non-state enemies with whom it's impossible to have a dialogue. Whatever we offer, their demand would be that we DIE. Our enemies are encouraged that their non-conventional war is working, wearing down the will of Dems and Americans who don't understand the stakes. Encouraged enough to make it implausible that they would change tactics now. They're the Lilliputians who've found a way to isolate and take down Gulliver.
And the Dems fall right into their lap, leading a large segment of the gullible public with them.
Exactly Timeout! Worse than that we are also fighting an asymmetrical war in which we have to selective take out the bad guys a few at a time with as little collateral damage as possible.
If all we had to do was blow up all the bad guys and not worry about the consequences of collateral damage this war would be over real quick.
Ever wonder how Saddam kept the peace all the time, he did not care about any consequences and everyone knew it. He would do whatever was necessary to keep his power, from mass killings to poisonous gas!! We don't fight like that, and no on is advocating that we do.
But,the idiots that want the war to be over "tomorrow" should realize that it takes time to selectively kill all the terrorists.Can't be done over night. That little detail is seldom mentioned in the msm/DBM and for good reason. It changes everything.