When  did the revolutionary wave which  Syria enjoyed an improvement in relations with several of the states in its region in the 21st century, prior to began
Arab Spring The Arab Spring, (Arabic: الربيع العربي‎ ‎ "ar-Rabīʻ al-ʻArabī") also referred to as Arab revolutions (Arabic: الثورات العربية‎ ‎ "aṯ-'awrāt al-ʻarabiyyah"), was a revolutionary wave of both violent and non-violent demonstrations, protests, riots, coups and civil wars in North Africa and the Middle East that began on 17 December 2010 in Tunisia with the Tunisian Revolution.
Jordanian intervention in the Syrian Civil War The Jordanian military intervention in the Syrian Civil War began on 22 September 2014, with air strikes on Islamic State of Iraq and the Levant (ISIL) targets, and escalated after the murder on Muath al-Kasasbeh, a captured Jordanian pilot, by ISIL, in early 2015.