Islamic State has lost 600 fighters and thousands of square kilometres over the past three weeks, the US Secretary of State says.
John Kerry made the comments after talks with European allies in Paris on the Syrian conflict.
“In Syria, over the last three weeks alone, Daesh has lost 3,000 sq km (1,160 sq miles) and 600 fighters,” he said, using another name for Islamic State.
Mr Kerry also said a recent truce has reduced violence in the war-torn country by 80-90%, which he said was “very, very significant”.
The landmark truce signed between the Syrian regime and rebels – but not by jihadist groups like Islamic State and Nusra Front – took effect late last month.
Read more: Sky News