Columbia subject headings:
Harvard subject headings:
IS (Organization)--Syria.
Israel--Military relations--Syria.
National security--Israel
National security--Syria.
Syria--History, Military.
Syria--Military relations--Israel.
Princeton subject headings:
IS (Organization)
Israel--Military relations--Syria.
National security--Israel.
National security--Syria.
Strategic forces--Syria.
Syria--History, Military.
Syria--Military relations--Israel.