ISIS Nukes Brussels, The Seljuks Beats the Mongols, and Stalin Joins The Axis
Although I'm still self-banned from posting on the biggest alternate-history forum on the Internet, I do visit the public sections to see what interesting actual alternate history (as opposed to the endless political arguing I quit the forum to avoid) is being discussed.
This led to my finding three more interesting timelines in recent weeks. One takes place in the modern day, the second in the days where Turkish power expanded into Asia Minor at the expense of the crumbling Byzantines, and the third during World War II.
The Sultanate of Rumistan: An Alternate Anatolia-The Seljuk Sultanate of Rum was established after the defeat of the Byzantine Empire by the Seljuk Turks, which began the process of Turkifying and Islamizing Asia Minor and the Byzantines' long decline. The Sultanate was eventually defeated and forced to pay tribute to the Mongols after their defeat at the Battle of Kose Dag, but in this timeline, the Seljuk sultan listens to his experienced commanders and waits for the Mongols to come to him rather than attack them immediately. The Mongols are defeated and the decline of the Seljuk Sultanate--which ultimately led to the rise of the Ottoman Empire--is averted. This is going to make life rather difficult for the Byzantines, but the author knows a whole lot about the workings of the Seljuk Sultanate, the neighboring Kingdom of Georgia, and the Byzantine secessionist regime in Trebizond and it's really quite interesting.
The Maw: When the Lights of the World Went Out-This story begins with agents of the infamous Islamic State somehow getting hold of a nuclear weapon--just how they got it hasn't been explained yet--and they smuggle it from the Middle East into Belgium. They set it off in the downtown area of Brussels, killing tens of thousands (if not more) immediately and provoking France to nuke ISIS's capital of al-Raqqa in reprisal. A straight-up World War II level obliteration of ISIS soon follows. It looks like the author was setting up a much darker scenario based on the hints he was dropping, but the timeline hasn't been updated in some time. Given how the real-life migrant crisis in Europe has been, well, a crisis, a world where ISIS agents snuck into Europe via Greece and ripped a chunk of a major EU city out with a nuke, I suspect the people getting the worst of it are going to European and refugee Muslims.
The Twin Vipers-Stalin joins the Axis. Although given Hitler's ultimate desire to conquer the Soviet Union, exterminate "Jewish Bolshevism," and turn the Slavs into helots for German Spartans and how in general fascism and Communism are opposed ideologies make this sound absolutely insane, there were talks to that effect. Rather than refusing to deal more than the bare minimum with people whom he viewed as racial enemies, the Germans were actually willing to admit the Soviets to the alliance to help defeat Britain. That would have made life very difficult for the Western Allies, since the Soviets could menace the Middle East and India in a way the Germans could not.
However, this timeline begins somewhat earlier than the real-life talks that took place after the defeat of France when the 1939 border conflict between the Soviet Union and Imperial Japan that ended with the Battle of Khalkin Gol escalates into a full-blown war. This leads to Mussolini getting sidelined, the British and French fighting the Soviets in Finland, and even Operation Pike, an Anglo-French plan to bomb the Soviet oil fields that didn't happen in real life.