The president later told reporters the operation was led by Free Syrian Army (FSA) rebels and that the Turkish army was not yet operating there.
"There's a serious operation in Syria's Idlib today and it will continue", Erdogan said in a speech to the members of his AK Party on Saturday, adding that Ankara would not allow a "terror corridor" on the border with the war-torn country.
Relations between the two countries have took a turn for the worse more recently following Erdogan's crackdown on political dissidents, some of whom are German citizens, in the wake of a failed putsch a year ago.
Erdogan announces “serious” operation in northern Syria
After his talks with Erdogan in Astana on September 28, Putin said that Moscow and Ankara had reaffirmed readiness to implement the final agreements reached in mid-September in Astana about four de-escalation zones, including the largest one in Idlib.
Pro-Turkey Syrian rebels are also preparing for an operation to oust HTS jihadists from Idlib province.
Turkey has also pressed, so far in vain, for the United States to extradite Fethullah Gulen over the July 2016 putsch, in which more than 240 people were killed.
Turkish forces have clashed with Hay'et Tahrir al-Sham fighters in Idlib province on the Syria-Turkey border, activists and a monitor reported.
Sessions Issues Sweeping Religious Liberty Guidance to Federal Agencies
Now, any employer can claim a religious or moral objection and opt out of covering contraception. The Sessions memo "doesn't legalize discrimination at all", scoffed one to Politico .
Tahrir Al Sham, which is listed by the USA and others as a "terrorist" group, counts an estimated 10,000 fighters among its ranks, according to the Syrian Observatory for Human Rights monitor.
Turkish military has been on the move in Turkey's Hatay province on the border with Syria.
Turkey said on Thursday that it was prepared to carry out a cross-border operation to retake Syria's northern city of Afrin when necessary.
Many Syrians had fled to Idlib from the neighbouring Aleppo province, which was rocked by heavy fighting past year, and Turkey meant to support them, Erdoğan said.
FBI Hopes Paddock's Girlfriend Can Provide Insight Into Las Vegas Attack
Marilou Danley has now returned to the United States and is being questioned by Federal Bureau of Investigation agents. They wonder if he had some sort of mental break at the time that drove him to start making plans for mass murder.
"Russian and Iranian observers will be in some regions here, and we will have our observers inside Idlib". Russian Federation is providing air support.
 Aljazeera.com. (2017). Erdogan: Turkey backing FSA rebels in new Idlib push. Turkey has supported and backed rebels that seek the toppling of Assad.
Gravitational wave discoverers win physics Nobel prize
Incredibly, Caltech were then actually able to convert the waves detected from the black hole collision into sound waves. LIGO has two observatories: one obviously right here in the Tri-Cities, and the other in Livingston, Louisiana.