Antiochus, as part of the peace treaty…

Antiochus offers an alliance to Philip, whom he had previously forsaken, in 193 BCE but is rebuffed: Philip joins Rome, together with …

…Rhodes, Pergamon, and …

…the Achaean League.

Only the Aetolians, discontent with Rome's growing influence in Greece and still smarting from the frustration of their ambitions by Flamininus, call upon Antiochus to be their liberator and appoint him commander in chief of their league.

Philopœmon, the Achaean League’s general, desires to control Sparta itself, and finds his opportunity in the revolts in the Spartan seaports instigated by Nabis, following the Roman departure from Greece in 194.

Sparta, recovering its ports, besieges Gythium’s Acraean garrison.

Philopœmon, upon securing a promise of support from Flamininus, marches to Gythium in advance of the Romans to open the campaign.

While the Romans bring the operation to its successful completion in 192, Philopœmon’s forces, failing against Nabis by sea, pursue Nabis’ army toward Mount Barbosthenes, where they nearly annihilate the Spartan forces.

Philopœmon installs a blockade of Sparta, then ravages Laconia, but Flamininus halts the fighting and restores equilibrium, thwarting Philopœmon’s plans to annex Sparta.

The Aetolians, as part of their scheme to precipitate war between Rome and Antiochus, eventually murder Nabis in 192 and temporarily occupy Sparta.

Philopoemen soon expels the Aetolians and induces Sparta to join the Achaean confederation with a promise of no interference in its internal affairs.

The Romans have on several occasions sent ambassadors demanding that Antiochus stay out of Europe and set free all the autonomous communities in Asia Minor.

To meet these demands would mean the actual dissolution of the western part of the Seleucid Empire, and Antiochus thus refuses.

When the Romans show little interest in compromise, Antiochus accepts the invitation of Rome's former allies, the Aetolians, who feel they had not been duly rewarded with additional territory after the victory over Philip, to liberate the Greeks.

Relying on the Aetolians, Antiochus lands in Demetrias in the autumn of 192 with only ten thousand five hundred men and occupies Euboea.

When Antiochus refuses to withdraw, …

...Flamininus announces that Rome's next mission is the liberation of the Greek cities of Asia.

The Romans, having defeated the Carthaginians in Iberia, battle fierce resistance from the Iberians themselves, especially in the north.

Cato, having become plebeian aedile in Sicily in 199 and, a praetor, governing Sardinia, had become consul with Lucius Valerius Flaccus in 195.

Fighting in Spain, he had organized its provincial administration.

A well established city located on steep bluffs above the Tagus River, about forty miles (seventy kilometers) southwest of present Madrid, falls to Rome in 192.

As Toletum (present Toledo), it becomes the provincial capital of Carpentia.

The presence of Hannibal and the sound advice he has given concerning the conduct of Syria’s war with Rome have become a source of embarrassment, and he is sent to raise and command a fleet for Antiochus in the Phoenician cities.

Inexperienced as Hannibal is in naval matters, he is defeated by the Roman fleet off Side, in Pamphylia.