Treaty of Tyre

The Treaty of Tyre was a truce called between the Camarilla and clan Assamite in 1496. The Camarilla agreed to call off all hostilities towards the clan ("hold back its Hand from the Full and Ultimate Extinction of Clan Assamite") and stop contracting Assamite assassins, whereas the Assamites agreed to cease their practice of diablerie against Camarilla members (submitting to a blood curse levied by the Tremere to ensure this), dismantle the defences of their stronghold Alamut, and no longer work as assassins.

The Treaty followed ten years of violence and near-open warfare between the Camarilla and the Assamites, begun in 1486 when the Camarilla called a Blood Hunt against them (the first and only time a hunt was called against an entire clan). The warriors of the clan had already been striking against the Kindred of the West during the years of the Anarch Revolt, largely in retribution for the Crusades, seen by many in the clan as a gambit of the Jyhad they had long sought to avoid. Despite the bloodthirst of the warrior caste, the Assamites attacked less in open combat and diablerie than in giving advice and support to the Anarchs.

The Blood Hunt can be attributed in large part to the Great Lie of the Tremere elder Etrius, who painted the Assamites as nothing more than vicious killers and diablerists. This accusation was fed not only by politically-motivated rumours but also the actions of the Assamite warriors in Europe. Once the Blood Hunt was called, the Assamites fought all the harder, and especially after the Convention of Thorns when their Anarch allies were lured back into the fold of the Camarilla.

The conflict would likely have continued indefinitely, probably ending with the death of every Assamite in Europe, had not a lone Nosferatu been found to have somehow breached Alamut's defences in late 1495. The worrying revelation that their stronghold could be found by Camarilla agents forced the elders of the clan to sue for peace, and they agreed to the Treaty early the next year.

The Treaty of Tyre and the Convention of Thorns
According to Assamite history (as per Clanbook: Assamite Revised), it was with the Treaty of Tyre that the Assamites agreed to the blood curse of the Tremere, not the Convention of Thorns. The Assamites were not substantially involved in the Convention, but instead continued to fight the Camarilla all the more fervently thanks to the loss of their Anarch allies. The Assamite history makes no reference to the ransomed elders from the Guide to the Anarchs treatment of the Convention.