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Updated September 23, 2024
Israel and Lebanese Hezbollah: Current Violence and Potential
Escalation

A day after Hamas (a U.S.-designated foreign terrorist
organization, or FTO) led the October 7, 2023, attacks
against Israel that began their ongoing war, Lebanese
Hezbollah (another FTO) started shooting rockets and
missiles across Lebanon's border into Israel in a show of
solidarity with Hamas. Since then, Hezbollah and Israel
have regularly exchanged fire across the border, in the latest
phase of their adversarial history. Iran appears to regard
Hezbollah as its most capable partner in its axis of
resistance versus Israel. Debate persists about the degree
to which Hezbollah acts independently or as Iran's proxy.
Since July 2024, Israel-Hezbollah violence has become
more volatile than in the preceding nine months. Separate
U.S.-supported efforts to pause or halt fighting in Gaza and
at the Lebanon border have not produced those outcomes to
date. September 2024 covert attacks attributed to, but not
claimed by, Israel resulted in the explosion of electronic
devices reportedly acquired by Hezbollah, causing major
casualties (including to some civilians). Hezbollah vowed
to retaliate.
Figure I. Hezbollah's Rocket and Missile Arsenal

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Source: Center for Strategic and International Studies, March 2024
(citing various sources).
Subsequent escalation has led both sides to declare that the
fighting has reached a new phase. On September 20, Israeli
leaders stated that an Israeli airstrike in Beirut killed several
senior Hezbollah officials. In the following days, Israel
carried out hundreds of airstrikes inside Lebanon, and
Hezbollah fired missiles deeper into Israeli territory. Iran-
backed groups in Iraq also reportedly fired projectiles at
Israeli targets. As of September 23, Israeli Prime Minister
Benjamin Netanyahu has stated Israel's intent to change
the security balance by eliminating senior figures,
terrorists and missiles. Lebanese casualties rose by the
hundreds as Israel's military said it called on Lebanese
civilians to evacuate areas used by Hezbollah for military
purposes. Hezbollah has said it refuses to stop firing at
Israel until there is a cease-fire in Gaza. Hezbollah's large

arsenal of drones, rockets, and missiles (see Figure 1)
could threaten Israeli strategic sites and population centers,
and Israel could strike throughout Lebanon, imperiling its
people and possibly exacerbating the country's serious
political and economic challenges. Wider-scale war could
prompt Israel to seek additional U.S. material support or
direct military involvement, with major implications for
U.S. national security interests in the region.
Even if Hezbollah were to agree to halt attacks, perhaps in
connection with an Israel-Hamas cease-fire, Israeli leaders
insist that Hezbollah's fighters must be kept back from the
border to mitigate the threat of an October 7-style attack
there. Violence to date has displaced some 60,000 Israeli
and 110,000 Lebanese civilians from their homes near the
border. In September, Israel's cabinet added the goal of
returning evacuated Israelis to its official war objectives.
While Israel retains conventional military superiority in the
region, some Israeli and U.S. analysts have assessed that
Hezbollah could be capable of overwhelming, depleting, or
targeting Israeli air defense systems via massive projectile
volleys-some of which may include precision guidance.
Dismantling Hezbollah's military capacity in Lebanon may
be more difficult than doing so against Hamas's forces in
Gaza, partly due to Hezbollah's considerable defensive
capabilities in Lebanon's varied terrain and the wider
geographic dispersal of Hezbollah's assets and personnel.
Israek-Hezbollah: Selected Historical Events
1982-    Israel's 1982 invasion of Lebanon and related U.S. and
1985     French military involvement trigger resistance from
some factions in Lebanon's ongoing civil war. Elements
from Lebanon's Shia community-including some
responsible for fatal attacks on U.S. and French
installations-establish Hezbollah with help from
Iran's Islamic Revolutionary Guard Corps.
1985     Israeli military withdraws from central Lebanon, but
maintains a zone of control in predominantly Shia-
populated southern Lebanon with a Lebanese partner
force. Hezbollah becomes the main node of resistance
to the Israeli presence.
1992-    Hezbollah bombings of Israel's embassy (1992) and a
1994     jewish community center (1994) in Argentina kill 29
and 85 people, respectively.
1996     Hezbollah attacks on Israel and Israeli forces trigger
the 17-day Israeli Operation Grapes of Wrath,
which kills more than 200 Lebanese.
2000      Israel withdraws from southern Lebanon, leading
Hezbollah to claim victory. Hezbollah maintains that
Israel still occupies Lebanese territory in disputed
parts of the tri-border (Israel-Lebanon-Syria) area.

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