We were lucky that Trump's worst impulses had been kept in check by his advisors, which is why it was so important that he would not get another term in which he would be able to act unrestrained. But even so he managed to destabilize the ME by ending the Iran agreement, and thus possibly laying the ground for another large war there in the future.
It will take all of Biden's skill and experience to salvage things in this aspect. Thanks to his kowtowing to autocrats like Erdogan, the Biden adminastration will have even less allies like the Kurds in the future in order to achieve this.
What about his peace deals in the Middle East?
What peace deals? All that happened was that some countries (none of which are that important) who had been secretly working with Israel for many years (an open secret in fact) are now doing it more openly. Not a bad thing mind you, but nothing groundbreaking. This is in fact another area where he failed. His close relationship with MbS would have been easier to swallow if he had capitalized on it and convinced SA to open connect relationships with Israel. That would have been an important signal. But nope, he failed to use this potential asset. The same counts for his policy towards Israel. It is a good thing that he moved the embassy to Jerusalem, but he should in return have demanded concessions from Israel that could have brought the Palestinians back to the negotiation tables. Again, nothing in this direction.
hes ending them.
Which war has he ended? We are still in Afghanistan, despite his attempts to sell out the democratic government in Kabul to the Taliban. He was able to end the war against the IS, because his predecessor had won it for him, with overall little consequence.
Trump leaves behind a lot of destabilization, a diminishment of American influence with nothing really to show for it. Obama had been able to negotiate something substantial with his deals with Cuba and Iran. None of which were perfect (nothing is in politics) but they achieved as much as possible under the understanding that America was not able and willing to fundamentally change certain things. The USA doesn't want another war in the ME, thus it has to reconcile itself with the continued existence of the Ayatollah regime and the Iran deal was a way to do this under acceptable parameters. Trump's foreign policy was completey aimless, because on the one side he was showing a hardline, but on the other hand did not want a war, a contradiction which Iran knew to exploit.
Besides, at least Biden is not known to brag how big his red button is.