…Mithridates II of Parthia, whose forces are advancing into north Syria against the declining Seleucids, concludes the first treaty between Parthia and Rome.

In the negotiations, which take place on the Euphrates between the Roman general Sulla and the Parthian ambassador Orobaze, Mithridates wisely refuses to agree to follow in the Roman path and prefers to retain his neutrality in the struggle between Rome and Mithridates VI of Pontus.

The two parties recognize the Euphrates as a common frontier.

Persistent persecution by Constantinople has fragmented the Paulicians, some of whom join the Arabs in fighting against the Christians.

Muslims supported by the Paulicians defeat Michael's army in 860 on the Euphrates River in northern Syria.

The nine-year war, waged from 851, has devolved into a series of skirmishes, resulting in a treaty and an exchange if prisoners.

…besieges Birecik in January 1145, but the army of Jerusalem has finally arrived and joined with Joscelin.

Zengi also hears of trouble in Mosul, and …