Yemeni Socialist Party
The Yemeni Socialist Party (Arabic: الحزب الاشتراكي اليمني, romanized: al-Ḥizb al-Ishtirākī al-Yamanī; YSP), also known as the Socialist Party Organization (منظمة الحزب الاشتراكي, Munaẓẓamat al-Ḥizb al-Ishtirākī), is a left-wing opposition political party in Yemen. The successor of the National Front, it was the sole legal political party in South Yemen until the Yemeni unification in 1990.