Seleucus was given Syria by Cassander and Lysimachus when they defeated Antigonus, but in the meantime, Ptolemy had occupied southern Syria, and Seleucus ceded this to Ptolemy, thus proving Ptolemy, the stronger king.
Seleucus ໄດ້ຖືກມອບໃຫ້ຊີເຣຍໂດຍ Cassander ແລະ Lysimachus ໃນເວລາທີ່ພວກເຂົາເອົາຊະນະ Antigonus, ແຕ່ໃນເວລານີ້, Ptolemy ໄດ້ຄອບຄອງພາກໃຕ້ຂອງຊີເຣຍ, ແລະ Seleucus ໄດ້ມອບເລື່ອງນີ້ໃຫ້ Ptolemy, ດັ່ງນັ້ນຈຶ່ງພິສູດ Ptolemy, ກະສັດທີ່ເຂັ້ມແຂງກວ່າເກົ່າ.