It's hardly just the Biden administration. Who exactly says there is a war with Iran? Iran certainly doesn't say so. Not every military action requires or results in war.
The only "war" I've heard declared is Israel declaring war on Hamas, and that stretches the definition since Hamas isn't even a country.
How do you think this situation would have been different if he would have lost the presidential election to Trump or if Trump had successfully overthrown democracy to seize control of America?
Biden vs trump biden has food prices high gas prices high failed to defend the border now the homeless shelters are filled to the brim with illegal migrants and now actual citizens can't get in
Trump is one of the few presidents who'd have handled this worse than Biden. Notable the list of "better than Biden on Palestine affairs" includes figures such as Reagan and George Bush, so it's not a high bar.