Syrian government airstrikes in rebel-controlled area kill 15

Syrian government warplanes struck a market and an industrial area Wednesday in the last territory in the hands of rebel groups in the country's northwest, killing at least 15 people, opposition activists said.

A new cessation of hostilities agreement between Russia and Turkey, which supportopposite sides in the conflict, went into effect last week. But violence has continued.

Fifteenpeople were killed and 65 were wounded in the strike, according to Yahya Abu al-Yaman, a volunteer with first responders the Syrian Civil Defence. Most were in critical condition after warplanes struck a vegetable market and industrial area in the city ofIdlibWednesday afternoon. The two areas are a few hundredmetres apart.

The Syrian Civil Defence, also known as the White Helmets, said one of its volunteers was killed in the strike.

The Britain-based Syrian Observatory for Human Rights said the two areas were crowded with people when the warplanes struck. It also put the death toll at 15.

The Observatory said airstrikes werereported in other parts of Idlib province, recording at least 42 Russian raids and 33 by government warplanes. The Observatory has a network of activists on the ground and has been monitoring the war in Syria since it began in 2011.

Concerns for civiliansafety

The government also launched several barrel bombs from helicopters in rural Idlib, according to the Observatory. The bombs are rudimentary and inaccurate projectiles that cause massive destruction.

Russia is a main backer of Syrian President Basharal-Assad, while Turkey is a strong supporter of some of the insurgents fighting against him. Moscow blamed the insurgents for violating the truce Saturday.

Idlib is controlled by armed rebel groups, including Turkey-backed opposition groups and al-Qaeda-linked militants who are the strongest there. It ishome to threemillion civilians. The United Nations said at least 300,000 have been displaced by the violence in the month between Dec. 1 and Jan. 1.

UNspokespersonStephane Dujarric on Wednesday said in a statement the world body is increasingly concerned about the safety of those civilians.

"The UN urges all parties, and those with influence over those parties, to ensure the protection of civilians and civilian infrastructure, in line with their obligations under international humanitarian law," he said.

The international body, which is responsible for delivering most of the aid to Idlib, has warned of the growing risk of a humanitarian catastrophe as people flee the fighting toward the Turkish border.

Ceasefires have failed to quell the violence. A government offensive that began last month appears aimed at reopening the highway linking the capital Damascus with the northern city of Aleppo, Syria's largest. The highway has been closed in Idlib since 2012, when insurgents captured several towns along the route.