Jamieson, Fausset and Brown on Daniel 11:14

14. many stand up against the king of the south--Philip, king of Macedon, and rebels in Egypt itself, combined with Antiochus against Ptolemy.

robbers of thy people--that is, factious men of the Jews shall exalt themselves, so as to revolt from Ptolemy, and join themselves to Antiochus; the Jews helped Antiochus' army with provisions, when on his return from Egypt he besieged the Egyptian garrison left in Jerusalem [Josephus, Antiquities, 12:3.3].

to establish the vision--Those turbulent Jews unconsciously shall help to fulfil the purpose of God, as to the trials which await Judea, according to this vision.

but they shall fall--Though helping to fulfil the vision, they shall fail in their aim, of making Judea independent.