"If there is the smallest injury to our soldiers on the observation posts or other places, I am declaring from here that we will hit the regime forces everywhere from today, regardless of Idlib's borders or the lines of the Sochi agreement", Erdoğan said.
Turkey is determined to push back Syrian regime forces from observation posts in Idlib by end-February, said Turkish President Recep Tayyip Erdogan at the governing Justice and Development (AK) Party meeting.
Erdogan, however, said the Syrian offensive on Idlib was aimed at forcing civilians to flee. These continual attacks - documented by both Russian and Turkish servicemen stationed in the area - ultimately triggered a Syrian government offensive against the militants.
Idlib's fate may well be decided by Turkey and Russian Federation as much as by Assad.
Recep Tayyip Erdogan threatened to strike Syrian forces "everywhere" if its soldiers come under renewed attack, but Russian Federation hit back and accused the Turks of failing to "neutralise terrorists" in the northwestern province of Idlib.
The British-based Syrian Observatory for Human Rights said government forces had seized the entire length of the M5 highway after driving rebels from their last foothold on the road. It also injured more than a dozen people.
Last week, government troops announced its recapture pf Saraqeba - a strategic crossroads town where the M5 intersects with a main west-east highway.
Meanwhile, Turkey's president accused Russian Federation of committing "massacres" in its support of the Syrian government on Wednesday, escalating a war of words as more Turkish reinforcements arrived on the ground.
For its part, the Syrian army said on Tuesday it would respond to attacks by Turkish forces who is trying to halt army advances into Idlib province.
A Russian delegation including military and intelligence officials held two rounds of talks in Ankara this week, but no concrete agreement emerged.
Military activity and the humanitarian crisis both intensified Tuesday in the city of Idlib as Turkey and its allies clashed with Syrian forces, whose northward drive has rendered over a half-million Syrian civilians homeless since December. "But even if nothing results from this, our determination is clear and we will do what is necessary", he said.
The two countries have so far maintained an uneasy partnership in Syria, where they back opposing sides, but disagreements over who should control Idlib have brought them to the brink of a standoff.
Erdogan has massed tanks and commandos in Idlib after at least 14 Turks, majority soldiers, were killed by forces loyal to President Bashar al-Assad, and on Wednesday threatened to hit Syrian targets "anywhere" if Turkish troops are harmed again.
One Turkish politician urged President Tayyip Erdogan to go further. Erdogan said he would reveal his next steps on Wednesday.
The US has cut off all diplomatic relations with the Assad regime and accused it of war crimes but says American troops are only in Syria to fight the Islamic State (Isil) not forces loyal to Damascus.
Idlib has been a stronghold of the opposition and anti-regime armed groups since the outbreak of the Syrian civil war in 2011.