In 190 BC, after being expelled from Greece, Antiochus III met the consular Roman army at the Battle of Magnesia in 190 BC. The Seleucids outnumbered the Romans by a margin of 2;1, according to some sources, and Antiochus had around 54 elephants and a significant number of war chariots. Despite this, the flexible manipular formation of the Romans totally destroyed Antiochus' army while Antiochus was on the Seleucid right flank attacking the Romans, and Antiochus had to retreat, subsequently abandoning Asia Minor in the Treaty of Apamea. What if Antiochus had won the battle and totally annihilated the Romans? Will they try again? Do the Seleucids have a chance? What happens in the east?