Columbia subject headings:
Syria--Foreign relations--Turkey--21st century.
Syria--History--Civil War, 2011-
Turkey--Foreign relations--Syria--21st century.
ʻAfrīn (Syria)--History.
Harvard subject headings:
Syria--Foreign relations--Turkey--21st century.
Syria--History--Civil War, 2011-
Turkey--Foreign relations--Syria--21st century.
ʻAfrīn (Syria)--History.
Princeton subject headings:
Syria--Foreign relations--Turkey--21st century.
Syria--History--Civil War, 2011-
Turkey--Foreign relations--21st century.
ʻAfrīn (Syria)--History.