Syria’s foreign minister said U.S.-led air strikes had failed to weaken Islamic State it in Syria and the jihadist group would not be tackled unless Turkey was forced to tighten border controls.

A U.S.-led alliance started attacking Islamic State targets in Syria in September as part of a wider effort to destroy the al Qaeda offshoot that has seized large areas of the country and neighboring Iraq.

“All the indications say that (Islamic State) today, after two months of coalition air strikes, is not weaker,” Foreign Minister Walid al-Moualem said in an interview with the Beirut-based Al Mayadeen TV broadcast on Friday. […]