Passage: The resulting peace treaty between Philip V and the Romans confined Philip to Macedonia and required him to pay 1000 talents indemnity, surrender most of his fleet and provide a number of hostages, including his younger son Demetrius. After this, Philip cooperated with the Romans and sent help to them in their fight against the Spartans under King Nabis in 195 BC.  Philip also supported the Romans against Antiochus III (192–189 BC).

Question: Who did Philip cooperate with?
the Romans