Instead of alleviating the misery of more than nine million Syrians who need urgent assistance, the humanitarian crisis has worsened since Resolution 2139 was adopted in February.
Amos said all parties to the conflict were guilty of violations, according to a diplomat who attended the closed door briefing.
Only 15 per cent of locations identified as in need of aid had been reached and only 12 per cent of Syrians in "hard to reach areas" had received assistance, Amos told the Council.
Amos demanded security guarantees so that aid convoys could cross conflict and border lines, telling the 15-member Council that there was no time to wait for travel permits.
The UN estimates that 3.5 million people in Syria live in hard to reach areas and 250,000 are besieged, the majority by Syrian security forces but some also by armed opposition groups.
It is Amos's second briefing since the resolution was passed and comes a week after UN chief Ban Ki-moon said aid access had not improved, blaming both sides but singling out the government.
But to introduce targeted sanctions a new resolution would be needed, which Russia, a key ally of Damascus, would veto.
Russia and China have vetoed three previous Security Council resolutions on Syria since the conflict began three years ago.
Russian ambassador Vitaly Churkin told the Council that the main obstacles were "terrorist activities," diplomats said.
French ambassador Gerard Araud accused Churkin of parroting the words of the Syrian government and Russia of ignoring reality.
To pressure Damascus and embarras Moscow, Western powers want to refer Syria to the International Criminal Court for war crimes.
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
