700--to Babylonia, where Merodach-Baladan, assisted by a certain Susub, a Chaldaean prince, was again in arms against his authority.
Sennacherib first defeated Susub, and then, directing his march upon Beth-Yakin, forced Merodach-Baladan once more to quit the country and betake himself to one of the islands of the Persian Gulf, abandoning to Sennacherib's mercy his brothers and his other partisans.

It would appear that the Babylonian viceroy Belibus, who three years previously had been set over the country by Sennacherib, was either actively implicated in this revolt, or was regarded as having contributed towards it by a neglect of proper precautions.

Sennacherib, on his return from the sea-coast, superseded him, placing upon the throne his own eldest son, Asshur-inadi-su, who appears to be the Asordanes of Polyhistor, and the Aparanadius or Assaranadius of Ptolemy's Canon.
The remaining events of Sennacherib's reign may be arranged in chronological order without much difficulty, but few of them can be dated with exactness.

We lose at this point the invaluable aid of Ptolemy's Canon, which contains no notice of any event recorded in Sennacherib's inscriptions of later date than the appointment of Assaranadius.
It is probable in that in the year B.C.699 Sennacherib conducted his second expedition into Palestine.

Hezekiah, after his enforced submission two years earlier, had entered into negotiations with the Egyptians, and looking to receive important succors from this quarter, had again thrown off his allegiance.