Due to the political tensions between the PYD and the KNC, and low manpower compared to the People's Protection Units, the Rojava Peshmerga have not been able to enter Syria. In the course of the Siege of Kobanî, the KNC offered to send 200 fighters to support the city's defenses, but its offer was rejected by the PYD as the latter wanted all Kurdish units to fight as part of the YPG and the YPJ. The KNC leader has several times claimed that the YPG even hindered the KNC's Peshmerga who had been trained in Iraqi Kurdistan from entering Rojava at all. Since the formation of the Syrian Democratic Forces, the YPG officials have stated that the Rojava Peshmergas are welcome to join and fight under SDF command. Despite discussions about possibly joining, the KNC have so far rejected joining SF and thus fighting under pro-PYD forces. Ibrahim Biro stated among other reasons for this that "they" [the SDF] have a good relation with the Syrian regime, that's why we cannot join them." Despite their tensions with the PYD, however, the KNC has also rejected inquires of Syrian opposition groups to send the Rojava Peshmerga to Azaz to defend the city against both ISIL as well as the YPG during the Northern Aleppo offensive. Bahjat Taymas declared that the Rojava Peshmerga "don't want to fight Kurds, only ISIS."