The Seleucids are the chief losers in…
200 BCE
The Seleucids are the chief losers in the struggles among the Hellenistic monarchs of Macedonia, Asia, and Egypt that began in 275.
While waging the ultimately inconclusive contest with the Ptolemies over Syria, the Seleucids have had to deal with near continuous rebellions in the eastern provinces of Asia.
The Seleucids control only southern Anatolia, northern Syria, and Mesopotamia by 200; in western Anatolia, the kingdom of Pergamon established by the rival Attalid dynasty holds firm.