Deir ez-Zor offensive (January 2017)

Deir ez-Zor offensive (January 2017)
Part of the Syrian Civil War and the Russian military intervention in the Syrian Civil War
The situation in Deir ez-Zor as of 16 January 2017      Syrian Government control     ISIL control
Date 14 January – 14 February 2017 (1 month) Location Deir ez-Zor Governorate, Syria Result ISIL victory ISIL cut the road to Deir ez-Zor Airport, splitting the government-held areas of Deir ez-Zor into two parts
Belligerents
Islamic State of Iraq and the Levant	Syrian Arab Republic  Russia
Commanders and leaders
Unknown Deir ez-Zor ISIL emir †	Issam Zahreddine Mohammad Khaddour
Units involved
Military of ISIL Wilayat al-Khair	Syrian Armed Forces Syrian Arab Army Republican Guard: 104th Airborne Brigade 17th Reserve Division: 137th Mechanized Brigade 121st Artilley Regiment Syrian Arab Air Force National Defense Forces Russian Armed Forces Russian Air Force
Strength
14,000(pro-government claim)	4,000 Syrian soldiers
Casualties and losses
241 killed (per SOHR) 500 killed (per SAA)	127 killed (per SOHR)
105 civilians killed (per SOHR)

ISIL victory

Military of ISIL

Syrian Armed Forces

Russian Armed Forces

The Deir ez-Zor offensive (January 2017) was a military operation launched by the military of the Islamic State of Iraq and the Levant (ISIL) against the Syrian Armed Forces, to capture the city of Deir ez-Zor, on 14 January 2017.

Deir ez-Zor is the capital of Deir ez-Zor Governorate and lies in an oil-rich region. The city has been besieged by ISIL since 2015 with an estimated 100,000 civilians in the government controlled areas and an additional 50,000 civilians in the ISIL controlled areas. Sources disagree one the exact date when the siege was imposed on the city with some sources claiming ISIL severed all land routes to the city by January 2015 while others state that the city became fully besieged in May 2015 following the first fall of Palmyra.

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