UNITED NATIONS, United States (AFP) - Denouncing a business-as-usual approach to Syria, UN chief Ban Ki Moon called for urgent action to lift sieges on civilians and to end barrel bomb attacks.
The appeal came in a report by the secretary general to the Security Council on Thursday that also made the case for stepped up efforts to reach a political solution and end the nearly four-year war.
"This conflict has become business as usual," Ban wrote in the report, obtained by AFP.
The UN chief listed five priorities for action, including the lifting of sieges on 212,000 people, ensuring access to medical aid to all of Syria and rebuilding the education system.
He also said the 15-member council must address barrel-bomb attacks on civilians and ending the practice of denying services as a weapon of war.
The report was the 12th to the council, which has been deeply divided over the war that has left more than 210,000 dead and displaced 12 million Syrians.
Russia, President Bashar al-Assad's ally, has blocked moves to punish the regime for the worsening violence.
Ban reported a significant escalation of violence and attacks by government forces during January in Damascus, rural Damascus and in eastern Ghouta.
Assad's forces conducted aerial bombardments including with barrel bombs, shelled the area of eastern Ghouta and launched surface-to-surface missiles, the report said.
In a BBC interview this month, Assad flatly denied that his forces were using barrel bombs, describing such claims as a "childish story."
"I haven't heard of (the) army using barrels, or maybe cooking pots," Assad said, laughing.
"We have bombs, missiles and bullets," he added, dismissing claims that his forces were using indiscriminate weapons.
Ban said barrel bombs were used against civilians in Aleppo, where the United Nations is seeking to freeze fighting as part of peace efforts.
Assad's forces are besieging 185,500 people in eastern Ghouta, Darayya and Yarmouk while armed opposition groups in Nabul and Zahraa are preventing 26,500 people from gaining access to food and other supplies, the report said.
Ban said the crisis is worsening for Syrians after nearly four years of war and issued fresh appeals for a political solution.
"Defining a political solution will involve tough decisions and compromise, with everyone putting aside their preconditions for launching talks," Ban said.
The Security Council is due to discuss the humanitarian crisis in Syria during a meeting next week.