Here is a fact check by the AP.
FACT FOCUS: With a truce in Israel, Trump now says he's ended eight wars. His numbers are off
I’ll summarize the 8 “wars he ended”:
Israel and Hamas: There is a shaky ceasefire and a hostage deal worked out, but the war is far from over.
Israel and Iran: There was a brief, 12 day “hot war”, which he helped negotiate an end to, but their cold war is continuing and can flare up at any time. Nothing approaching peace has occurred there.
Egypt and Ethiopia: There was no war to begin with. This was a disagreement over a dam on the Blue Nile River. The US tried to negotiate to ease tensions, but those talks stalled, and there is just as much tension as there was before. Again, there was no war, and Trump didn’t even really achieve any changes in the non-war.
India and Pakistan: No war actually broke out, but it got close to a war starting before a ceasefire was reached. Pakistan gave Trump credit for helping, India claims that the US never even talked to India so it didn’t have anything to do with it. Regardless of the truth, again there wasn’t even a war to begin with.
Serbia and Kosovo: Not only was there no war, there wasn’t even any kind of recent conflict. Rather, NATO has been keeping the peace in the area, so there was nothing for Trump to even do. This is a complete fabrication from a bullshitter.
Rwanda and the Democratic Republic of the Congo: The war is still ongoing, and fighting has continued. Trump did help negotiate a peace deal between Rwanda and the Congo, but rebels are still fighting and weren’t part of that deal, so the war wasn’t ended. Even if it was, Trump couldn’t claim he did it himself. Qatar has had the largest role in trying to bring peace, but those efforts have stalled.
Armenia and Azerbaijan: I’ll give him credit for almost ending a war. It’s pretty close. Both parties agreed to a ceasefire, and a peace deal is in the works, but not done yet. When they do sign the treaty, I think it’s fair for him to take credit for this one, but not quite yet.
Cambodia and Thailand: There was a conflict, but it doesn’t seem to have escalated to a true war, and all Trump did was again help negotiate a ceasefire. Now, he did achieve that pretty much on his own, by threatening tariffs on both countries (so his tariffs have actually been used in a productive way, that’s a miracle). But claiming to have ended a war here is a huge exaggeration.
So to sum up, he claims to have ended 8 wars, when in reality he is pretty close to ending just one. Which, hey, that’s an accomplishment, but it’s very far from what he’s claiming.