Nearly 50 civilians were killed in missile strikes on hospitals and two schools in northern Syria on Monday, the United Nations said, deepening the country's humanitarian crisis despite plans for a temporary cease-fire later this week.
Doctors Without Borders said that at least seven people were killed early Monday when rockets hit a clinic that it supports in Idlib province. The group also said eight people were missing in what it called a "deliberate attack" on its facilities.
Doctors Without Borders did not say which group or military had fired the rockets, although rights groups have documented numerous Russian and Syrian government strikes on hospitals and medical facilities across the country. In total, at least five medical facilities and two schools in Idlib and neighboring Aleppo province were attacked on Monday, a U.N. spokesman said.
"Such attacks are a blatant violation of international laws," the spokesman said on Monday, according to the Reuters news agency.
The fresh fighting comes after Syrian regime forces - backed by Russian warplanes, Iranian troops and Iraqi militia fighters - have made significant gains against rebel forces in northern Syria in recent weeks. The advances have raised the stakes of the nearly five-year-long conflict, which has already transformed into a proxy war.