211 BC

By place

Seleucid Empire

• Antiochus III's sister arranges for the removal of Armenia's king Xerxes, whom she has recently married. Antiochus III then divides the country into two satrapies.

  Carthage

• The Carthaginian general Hasdrubal Barca returns to Spain after his victory over the rebellious Numidians. He then manages to turn the tide against the Romans in Spain, with the Roman generals Publius Cornelius Scipio and his brother Gnaeus Cornelius Scipio Calvus killed in separate battles—Publius on the upper Baetis and Gnaeus in the hinterland of Carthago Nova. The Carthaginians recover all their territory south of the Ebro.

  Roman Republic

• With the capture of Syracuse, the Romans are able to pacify all of Sicily.
• The Romans besiege the town of Capua. The town eventually falls to the Romans and its citizens are punished by them. The town's nobility are put to the sword, its territory is confiscated and its municipal organisation is dissolved.
• Hannibal marches northwards on the city of Rome in a belated and unsuccessful effort to capture the city.
• Rome faces the burdens of inflation and the danger of famine, caused by the disturbed conditions in Italy and Sicily and the withdrawal of so many men from farming. The situation is only relieved by an urgent appeal by the Romans to the King of Egypt, Ptolemy IV, from whom grain is purchased at three times the usual price.

  Greece

• The Roman commander Marcus Valerius Laevinus explores the possibility of an alliance with the Aetolian League as the Aetolians are once again ready to consider taking up arms against their traditional enemy, Macedonia. A treaty is signed to counter Philip V of Macedon who is allied to Hannibal. Under the treaty, the Aetolians are to conduct operations on land, the Romans at sea. Also, Rome will keep any slaves and other booty taken and Aetolia will receive control of any territory acquired.

  Parthia

• Arsaces II succeeds his father Arsaces I as King of Parthia.