IS has controlled large areas of both countries since declaring its self-styled "caliphate" in 2014 but is losing territory in the face of separate assaults.
In Syria, pro-government forces, rebels and a US-backed Arab-Kurdish alliance are all engaged in offensives to squeeze the extremists' supply lines, while Iraqi forces are advancing on the IS-held city of Fallujah.
The Damascus regime has also kept up its assaults on opposition areas, particular in second city Aleppo, where at least 15 civilians were killed today in bombing by pro-government forces that struck near a hospital.
In late May, IS captured several villages between the two towns, cutting off access to the Turkish border for Marea's opposition forces.
But early today, rebels backed by Islamist groups launched simultaneous attacks from both Marea and Azaz, squeezing IS jihadists out of the villages of Kafr Kalbin and Kaljibrin and reopening the road, according to the Syrian Observatory for Human Rights.
Director Rami Abdel Rahman said IS fighters even pulled back from towns and villages east of the supply route, including Dudyan near the border.
An AFP photographer saw bodies wrapped in bloodied white bags outside the hospital, while inside, the force of the blast had knocked supplies and parts of drywall onto the floor.
Al-Bayan hospital said a staff member was wounded in the strikes and the building had been evacuated.
According to the Observatory, five other civilians -- including two children -- were killed in attacks on the Al-Marja and Al-Maadi districts.
Rescue workers known as the White Helmets gave a higher toll of 23 dead in rebel-held areas.
IS forces had long coveted Marea and battered the town for over a year with deadly car bombs and suicide attacks.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
