The bombing raids hit a string of towns and villages in the northwest province of Idlib, which is nearly entirely controlled by various jihadist and hardline rebels.
With the United States dollars 1.8 billion appeal for Syria only 26 percent funded, the UN Regional Humanitarian Coordinator said on Monday that the worldwide response to the seven-year conflict was "really at a breaking point".
Moumtzis said that a major battle for Idlib could be "much more complicated and brutal" than fighting for eastern Aleppo and eastern Ghouta - two opposition-held areas that surrendered with evacuations in 2016 and 2018, respectively.
The United Nations is warning of escalated fighting in the Syrian province of Idlib, where 2.5 million civilians are trapped.
Fuaa and Kafraya are the only two places in Syria now designated as besieged by the United Nations after the government recaptured the Yarmuk Palestinian camp in southern Damascus.
The so-called Syrian Observatory for Human Rights (SOHR) reported that Hay'at Tahrir al-Sham terrorists were "heavily shelling" the towns, both in northwestern Idlib Province, and had broken into them late Saturday.
They came under siege in 2015, when rebels ousted regime forces from the vast majority of Idlib province.
UN Secretary General Antonio Guterres on Sunday called for an investigation into the the airstrikes that reportedly left dozens dead in the village of Zardana in Syria's Idlib governorate, his spokesperson said.
In a statement, Mr Guterres expressed "deep concern" about the strikes and called for a "full investigation into the attacks, especially allegations that there was also a second strike targeting first responders, to establish accountability".
He reiterated that Idlib was a de-escalation zone, established as part of an agreement reached in May 2017 in Astana by the three guarantor nations of the Syrian ceasefire - Russia, Iran and Turkey.
Syrian forces later moved to liberate other militant-held areas in the provinces of Homs and Hama.
He said Monday that 920,000 people were displaced within Syria between January and April, the highest number of any four-month span since the war began. Its local rivals hold about a third and the regime controls about 10 per cent, according to the Observatory.
Despite the fact the Syrian government has regained control of most of the territory and the war is now confined to specific areas, internal displacement continues to be massive, according to the UN.
The White Helmets say at least 16 more people were killed by Syrian government airstrikes over the weekend.
The latest data transmission showed the rover's temperature to be about minus 20 degrees Fahrenheit (minus 29 degrees Celsius). Like the human body, the exploration rover can not function well under excessively hot or cold temperatures.
Twenty further runs in the final two overs took Pakistan past the 200-run mark, leaving Scotland with too much to chase. Australia know they must build bridges across the cricketing world in order to fix reputations and trust.
The 19-year-old star enjoyed an excellent debut season at PSG, scoring 21 times and setting up 16 in 46 games in all competitions. The 19-year-old was pictured laying on the floor holding his left ankle before then being helped up by staff.
During these days, Jolie is allowed to call the kids only one time per day at a time agreed on in advance by both parents. Eldest child Maddox however will be able to choose how much time he wants with each parent because of his age.
Résident à Mollet, près du circuit barcelonais, Andreas avait débuté la moto à 3 ans avant de débuter la compétition à 7 ans. Un autre concurrent ne parvenait pas à l'éviter et le percutait de plein fouet.
Mais il le sera nettement moins que lors de la précédente journée de mobilisation spéciale, la "Journée sans cheminots " le 14 mai, qui avait vu rebondir la participation jusqu'à frôler les 28% de grévistes.
More importantly, he would head to Shinnecock Hills with a spring in his step for the second major championship of the year. At the 445-yard par-4 sixth, Bryan got on in 2 and missed his par putt from 4 feet, finishing with a 3-putt bogey.
Seattle repeals tax on companies like Amazon
The vote came after about an hour of public comment during which people from both sides of the argument shouted at councilmembers. In a statement , Mayor Durkan and seven council members vowed to continue searching for a solution for the homelessness problem.
Prince Harry gives Meghan Markle some royal pointers
A fan account for Harry and Meghan caught the pre-curtsy confirmation. " She really wants his views", said a source. In fact, it's rumored that Prince Harry might have a little something to do with her style choices.
Denuclearize first, talk sanctions after: What historic US-N
The president said the drills cost the US a " tremendous amount of money ", and that South Korea hasn't always chipped in enough. CBS News' David Martin reports that Pentagon spokesperson Dana White said Defense Secretary James Mattis "was not surprised".