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.
North Yemen Civil War The North Yemen Civil War (Arabic: ثورة 26 سبتمبر‎ ‎ , "Thawra 26 Sabtambar", "26 September Revolution") was fought in North Yemen from 1962 to 1970 between royalist partisans of the Mutawakkilite Kingdom and supporters of the Yemen Arab Republic. The war began with a "coup d'état" carried out in 1962 by revolutionary republicans led by the army under the command of Abdullah as-Sallal, who dethroned the newly crowned Imam Muhammad al-Badr and declared Yemen a republic under his presidency. The Imam escaped to the Saudi Arabian border where he rallied popular support from northern Shia tribes to retake power, escalating shortly to a full-scale civil war.