The Siege of Nicaea of 1113 occurred in the course of the Byzantine-Seljuk wars

Byzantine-Seljuk wars

The Byzantine–Seljuq Wars were a series of decisive battles that shifted the balance of power in Asia Minor and Syria from the Byzantine Empire to the Seljuq Turks...

.

Following the success of the First Crusade

First Crusade

The First Crusade was a military expedition by Western Christianity to regain the Holy Lands taken in the Muslim conquest of the Levant, ultimately resulting in the recapture of Jerusalem...

 and the failure of the Crusade of 1101

Crusade of 1101

The Crusade of 1101 was a minor crusade of three separate movements, organized in 1100 and 1101 in the successful aftermath of the First Crusade. It is also called the Crusade of the Faint-Hearted due to the number of participants who joined this crusade after having turned back from the First...

, the Turks

Turkish people

Turkish people, also known as the "Turks" , are an ethnic group primarily living in Turkey and in the former lands of the Ottoman Empire where Turkish minorities had been established in Bulgaria, Cyprus, Bosnia and Herzegovina, Georgia, Greece, Kosovo, Macedonia, and Romania...

 resumed their offensive operations against the Byzantine

Byzantine

Byzantine usually refers to the Roman Empire during the Middle Ages.Byzantine may also refer to:* A citizen of the Byzantine Empire, or native Greek during the Middle Ages...

s. Emperor Alexios I Komnenos

Alexios I Komnenos

Alexios I Komnenos, Latinized as Alexius I Comnenus , was Byzantine emperor from 1081 to 1118, and although he was not the founder of the Komnenian dynasty, it was during his reign that the Komnenos family came to full power. The title 'Nobilissimus' was given to senior army commanders,...

, suffering from old age was unable to deal with the swift Turkish raids into what was left of Byzantine Anatolia. However, the Seljuk Sultanate of Rum

Sultanate of Rûm

The Sultanate of Rum , also known as the Anatolian Seljuk State , was a Turkic state centered in in Anatolia, with capitals first at İznik and then at Konya. Since the court of the sultanate was highly mobile, cities like Kayseri and Sivas also functioned at times as capitals...

 was finally brought to battle when it unsuccessfully laid siege to Nicaea.