The Macedonian–Carthaginian Treaty was an anti-Roman treaty between Philip V of Macedon and Hannibal, leader of the Carthaginians, which was drawn up after the Battle of Cannae when Hannibal seemed poised to conquer Rome. Philip V, who feared Roman expansion, wanted to ride on the coat tails of the victor in the Second Punic War (218–201 BC). The discovery of this treaty inevitably led to the outbreak of the First Macedonian War (214–205 BC) between Rome and its Greek allies against Macedonia.