U.S. drones and aircraft have begun arriving at a Turkish air base close to the border with Syria, and an "extensive" fight against Islamic State militants will soon begin, Turkey's foreign minister said Wednesday, according to AP. Speaking to reporters on the sidelines of an ASEAN meeting in Kuala-Lumpur, Turkish Foreign Minister Mevlut Cavusoglu said the battle would begin soon, but didn't elaborate. "As part of the agreement reached with the United States, we have made great strides on the technicalities of Incirlik's use and the U.S. aircraft have started to arrive," the state-run Anadolu Agency quoted him as telling reporters. "Soon we will together start an extensive battle against ISIS." The Turkish minister also told reporters that once the "effective" fight has begun, the ground would become safer for moderate opposition forces fighting ISIS.