Sources: BBC
Several nations, including Turkey, Germany and Canada, expel Syrian diplomats in response to the May 25 Houla massacre. 2012-05-30
A senior Iranian Revolutionary Guards commander admits that the country has sent troops to Syria to fight against opposition forces. 2012-05-29
In his annual Easter message from the Vatican, Pope Benedict XVI calls particularly for "an end to the bloodshed" in Syria. 2012-04-8
At least 48 people are reported killed across Syria as US President Barack Obama and Turkish Prime Minister Erdoğan hold talks about a process for transitioning to a "legitimate government". 2012-03-25
Syrian armed forces continue to bombard the city of Homs, and rebels attack a military base near the capital Damascus. 2012-03-25
Russian officials will meet with U.N.-Arab League envoy Kofi Annan to discuss his efforts to mediate a cease-fire in Syria and with a Syrian opposition delegation in the next few days. 2012-03-22
The head of the suspended Arab League's observer mission in Syria, Mohammed Ahmed Mustafa al-Dabi, resigns. 2012-02-12
The opposition Free Syrian Army kills at least eight Syrian soldiers in attacks on bases near Damascus and other targets in the country. 2011-11-16
After a meeting with Russian officials in Moscow, the opposition Syrian National Council calls for UN peacekeepers to be introduced into Syria. 2011-11-15
At least 34 more protesters are killed by Syrian security forces in protest marches dedicated to children who have died during the demonstrations. 2011-06-3