I admit I might be guilty of a little bit of clickbait here, as what the title suggests isn’t absolutely necessary, but...
In my timeline about the Seleucids, the Seleucids have now defeated the Romans twice in the 160s BCE. Rome is still in effective control of Greece, but one of its consuls (the one that survived the second defeat) signed a treaty agreeing to pay back the indemnity that the Seleucids paid the Romans after the Treaty of Apamea. I personally find it very unlikely that the senate will ratify this treaty, and if they don’t, what then?
Tiberius Gracchus the Elder died during his humiliating defeat in Syria. His sons are alive and still likely to go into politics, though their careers might be very tumultuous given their father’s reputation. However, if Rome is forced to pay back the indemnity (and then some), what effect could this have on the reforms proposed by Gaius Gracchus in his Lex Sempronia Agraria? Will they be more popular among the upper classes, or no? If not, and if they are still shutdown, given the fact that the non-citizen Italians were already quite discontented with fighting foreign wars and coming home to find their farms bankrupt or bought out from under them, might this cause some kind of a revolution?