WASHINGTON, July 20 (Aljazeera) - The United States estimates that Russian casualties in Ukraine so far have reached about 15,000 killed and perhaps 45,000 wounded, the director of the CIA has said, cautioning that Kyiv has endured significant losses as well.

“The latest estimates from the US intelligence community would be something in the vicinity of 15,000 [Russian forces] killed and maybe three times that wounded. So a quite significant set of losses,” William Burns said at the Aspen Security Forum in Colorado.

“And, the Ukrainians have suffered as well — probably a little less than that. But, you know, significant casualties.”