Turkey's military has attacked Syrian targets  in response to the killing of five Turkish civilians  by Syrian government forces. Prime Minister Tayyip Erdogan's office issued a statement  immediately afterwards, saying:
Our armed forces in the border region responded immediately to this abominable attack in line with their rules of engagement; targets were struck through artillery fire against places in Syria identified by radar.
The Turkish parliament has passed a year-long mandate  which approves cross-border military action. The motion was passed by 320 votes in the 550-seat Turkish parliament.
Turkey's Deputy Prime Minister has said in a statement that authorising the use of force in Syria does not amount to a declaration of war, but acts as a preventive measure. This was followed by a statement from Turkey's Prime Minister , who said:
All we want in this region is peace and security. We have no intention of starting war. We are aware of the outcome, consequences, of war in Iraq and Afghanistan … we see the same in Syria.
The state-run Syrian News Agency (SANA ) released an immediate statement saying Syrian authorities are offering sincere condolences to the families of the deceased and the Turkish people.
More than 5,000 protesters  took to the streets of Istanbul against a possible war with Syria. On Thursday night, the demonstration was against AK party, protesters chanted:
The AKP wants war, the people want peace. No to war, peace right now.
Cherine Atalla tweeted this  picture from the protest, which reads “Hands off Syria”:
In Turkey, the slogan Savasa hayir , which means “no to war,” became top trending topic among Twitter users on Thursday morning. And since the cross-border military action mandate has been approved, social networks have been divided on the issue, creating a firestorm of opinions from activists, pundits and the like.
From Turkey, Hulya Ataoglu tweeted:
@cramelin : #savasahayir #notowar No to war, not now, not ever.
Ozgur Gurbuz, from Istanbul, says:
@ozzgurbuz : Peace is the only way #noWar #savasahayir from Istanbul. Getting more and more here.
And Sarper Ere  tweets a picture above from the protest against war with Syria, commenting “Peace at home, peace at world”.