Government sources have said Turkey is not planning to declare war on Syria.
The UN Security Council is to meet later, following a Turkish request for the body to take "necessary action" to stop Syrian "aggression".
Russia, which is allied to President Bashar al-Assad's government, has asked Damascus to acknowledge officially that the cross-border attack was "a tragic accident" which will not happen again.
In Syria itself as many as 21 members of Syria's elite Republican Guards have been killed in an explosion and firefight in the Qudsaya district of Damascus, the UK-based Syrian Observatory for Human Rights (SOHR) told the BBC.
There's a conspiracy to create a NWO: Very liberal: "NO - 69% to 12%", Very conservative: "YES - 45% to 26%." Tea party types oppose immigration reform, trade agreements, the UN, the WTO and action on climate change.