In a statement, Paulo Pinheiro, head of the International Commission of Inquiry on Syria, said an ongoing Syrian government siege of Eastern Ghouta "involve (s) the international crimes of indiscriminate bombardment and deliberate starvation of the civilian population".
Reports of air strikes hitting at least three hospitals in the past 48 hours "make a mockery of so-called "de-escalation zones", Pinheiro said, referring to a Russian-led truce deal for opposition-held territory that has failed to stop fighting there".
The Britain-based Syrian Observatory for Human Rights monitoring group said warplanes attacking eastern Ghouta near Damascus had struck the towns of Zamalka, Arbaeen, Hazza and Beitu Soua, killing at least 29 people. The activist-run Ghouta Media Center said at least two, Douma and Harasta, was struck by ground-to-ground missiles.
Pinheiro said the attacks on Eastern Ghouta involve "the global crimes of indiscriminate bombardment and deliberate starvation of the civilian population".
The call from the Syrian National Coalition followed the recent attacks on several points of opposition-held Idlib, demanded the urgent interference of the UNSC and to make decisions directly against Russian Federation.
The Syrian army has deployed new air defenses and anti-aircraft missiles to frontlines in the Aleppo and Idlib areas, a commander in the military alliance fighting in support of President Bashar al-Assad said on February 5.
"The agreed inter-agency bi-monthly plan to reach besieged and hard-to-reach areas is paralyzed due to access restrictions or lack of agreement concerning locations, supplies and number of beneficiaries", the statement said.
Two more Turkish soldiers killed in Syria offensive: army
Turkey's military launched an incursion into northern Syria's Afrin region against the US -backed YPG militia two weeks ago. As of Saturday morning, 897 PKK/YPG terrorists were killed in operations, airstrikes and shelling by the Turkish military.
Fresh government strikes on a besieged rebel-held enclave near Damascus killed 47 civilians on Tuesday despite mounting Western pressure on Syrian President Bashar al-Assad.
- Eastern Ghouta: "Humanitarian needs are increasing and life-saving aid is urgently required", in the rebel-stronghold the United Nations said, but people in need have not been reached with inter-agency assistance since late November 2017. It said one of its workers was also killed by an airstrike while responding to a call for rescue in the area.
Turkey's military says a Turkish soldier was killed in an attack in Syria's Idlib province where the Turkish troops are establishing an observation post.
Meanwhile, Turkish operations against Syrian Kurdish forces and USA and Russian-backed operations against the Islamic State group have compounded the suffering of Syrians in the country's north and east.
Erdogan blasted the US for its military presence in Manbij with fighters from the People's Protection Units (YPG), the armed wing of the Democratic Union Party (PYD), which Ankara sees as a terror group affiliated with the banned Kurdistan Workers Party (PKK) which has been fighting for autonomy in Turkey's southeast.
"We implore the worldwide community to speak with one voice, taking every opportunity to publicly pressure the Assad regime, and its supporters, to cease its use of chemical weapons", spokeswoman Heather Nauert said in a statement Monday night.