He isn't going to take on NATO as it is. Trump wants to leave NATO, which is an organization ruled by the U.S. to promote our national interests around the world. The U.S. is handling business better than I remember in the last 20 years right now. Is it Biden making all the calls and taking all the shots? I don't think so but he is staying out of the way of a very competent cabinet and staff.
The U.S. is threading the needle in the Hamas/Israel conflict really really well. The U.S. is about to manage the first soft landing in economic history. Until obstructionists and possible Russian agents in our government obstructed aid, the U.S. was giving our expiring equipment to Ukraine, using the money allocated to restock ourselves with the newest hardware, keeping most of the money allocated for Ukraine aid in the U.S. all the while Ukraine was using our spares and throwaways to spank the Russian aggressors.
I'm no fan of Biden, but he sure does know how to stay out of the way and letting the U.S. win, win, win.