Columbia subject headings:
Iraq--Foreign relations--Syria.
Syria--Foreign relations--Iraq.
Harvard subject headings:
Iraq--Foreign relations--Syria.
Syria--Foreign relations--Iraq.
Ḥizb al-Baʻth al-ʻArabī al-Ishtirākī (Iraq).
Ḥizb al-Baʻth al-ʻArabī al-Ishtirākī (Syria).
Princeton subject headings:
Iraq--Foreign relations--Syria.
Syria--Foreign relations--Iraq.