BEIRUT — Russia warned the United States Saturday against carrying out any attacks on Syrian government forces, saying it would have repercussions across the Middle East as government forces captured a hill on the edge of the northern city of Aleppo under the cover of airstrikes.

Russian news agencies quoted Foreign Ministry spokeswoman Maria Zakharova as saying that a U.S. intervention against the Syrian army “will lead to terrible, tectonic consequences not only on the territory of this country but also in the region on the whole.”

Airstrikes heavily damaged buildings in Aleppo, Syria, on Saturday as Syrian government forces captured the strategic Um al-Shuqeef hill on the northern edge of the city.

She said regime change in Syria would create a vacuum that would be “quickly filled” by “terrorists of all stripes.”

U.S.-Russian tensions over Syria have escalated since the breakdown of a cease-fire last month, with each side blaming the other for its failure. Syrian government forces backed by Russian warplanes have launched a major onslaught on rebel-held parts of the northern city of Aleppo.

Syrian troops pushed ahead in their offensive in Aleppo on Saturday, capturing the strategic Um al-Shuqeef hill near the Palestinian refugee camp of Handarat that government forces captured from rebels earlier this week, according to state TV. The hill is on the northern edge of the Aleppo, Syria’s largest city and former commercial center.

The powerful ultraconservative Ahrar al-Sham militant group said rebels regained control Saturday of several positions they lost in Aleppo in the Bustan al-Basha neighborhood.

State media said 13 people were wounded when rebels shelled the central government-held neighborhood of Midan.

Airstrikes on Aleppo struck a hospital in the eastern rebel-held neighborhood of Sakhour, putting it out of service, according to the Britain-based Syrian Observatory for Human Rights and the Local Coordination Committees. They said one person was killed in the airstrike.

Opposition activist Ahmad Alkhatib described the hospital, known as M10, as one of the largest in Aleppo. He posted photographs on his Twitter account showing the damage, including beds covered with dust, a hole in the roof and debris covering the street outside.

A doctor at the hospital told the Aleppo Media Center, an activist collective, that thousands of people were treated in the compound in the past..

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