The United States threatened Wednesday to suspend its engagement with Russia over the conflict in Syria following escalating attacks on terrorist-held parts of Aleppo city.

On Wednesday, US Secretary of State John Kerry warned Russian counterpart Sergei Lavrov that Washington will end talks on the conflict unless Moscow halts the Aleppo assault.

Kerry said the burden was on Russia to stop the assault and ensure humanitarian aid access, his spokesman John Kirby said.

“The United States is making preparations to suspend US-Russia bilateral engagement on Syria… unless Russia takes immediate steps to end the assault on Aleppo and restore the cessation of hostilities,” Kirby said.

Source: AFP