International tensions also rose as Western countries slammed a Russian food embargo imposed as revenge for sanctions slapped on Moscow over its backing for insurgents in Ukraine.
The renewed violence came after NATO chief Anders Fogh Rasmussen warned Moscow to "pull back from the brink" and as Western countries warned that Russia could be preparing to send troops across the border in the guise of a humanitarian mission.
Council Secretary Nikolai Patrushev vowed that Moscow was trying its best "to de-escalate tensions", but Kiev said its positions continued to come under fire from Russian territory.
Ukraine's military said seven soldiers and eight border guards were killed over the past 24 hours as a bloody three-day battle with pro-Russian rebels forced several government units to retreat from the border in the southeast of the war-torn Lugansk region.
An AFP journalist meanwhile heard renewed sporadic shelling in the main insurgent bastion of Donetsk.
But the rebels, believed by the West to be backed by Russia, have not stepped back in the face of a fierce government assault.
The new prime minister of the self-proclaimed Donetsk People's Republic, Alexander Zakharchenko admitted that the situation was "difficult and tense" but said "the troops' morale is strong."
Over 1,300 people have been killed and 285,000 forced to flee their homes over four months of what the Red Cross has designated a civil war in eastern Ukraine.
Aside from the 15 killed, 79 soldiers were injured in the east in the past 24 hours, Ukraine's military said today.
The rebels shot down a Ukrainian fighter jet the day before some 40 kilometres east of Donetsk and said they had captured the two pilots.
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
