On September 16 and 17, the IDF carried out airstrikes in the vicinity of Damascus, reportedly aimed at Iranian logistical centers there. These follow on an increase in the frequency of such attacks in recent weeks, which have included strikes on the Aleppo airport on August 31 and September 6. Jonathan Spyer comments:

The specific targeting of the Aleppo airport is almost certainly related to recent indications that Iran is relying increasingly on its “air bridge” to Syria and Lebanon, because of Israel’s successful and systematic targeting of efforts to move weaponry and equipment by land [via Iraq]. But the increased tempo of activity is not solely related to the specific issue of greater use of air transport by Teheran. Rather, it is part of a broader picture of increasing regional tension. There are a number of factors that contribute to this emergent picture.

Firstly, Russia appears to be pulling back in Syria. . . . There are no prospects for a complete Russian withdrawal. The air base at Khmeimim and the naval facilities at Tartus and Latakia are hard strategic assets which will be maintained. The maintenance of Assad’s rule is also a clear objective for Moscow. But beyond this, the Russians are busy now with a flailing, faltering military campaign in Ukraine. Moscow lacks the capacity for two close strategic engagements at once.

Secondly, assuming that some last-minute twist does not occur, it now looks like a return to the [2015 nuclear deal] is not imminent. In the absence of any diplomatic process related to the Iranian nuclear program, and given Israeli determination to roll back Iran’s regional ambitions, confrontation becomes more likely.

Lastly, it is important to note that the uptick in Israeli activity is clearly not related to Syria alone. Rather, it is part of a more general broadening and deepening by Israel in recent months of its assertive posture toward the full gamut of Iranian activity in the region. . . . The increasing scope and boldness of Israeli air activity in Syria reflects this changing of the season.

On Tuesday, a Hizballah drone attack injured three people in northern Israel. The next day, another attack, targeting an IDF base, injured eighteen people, six of them seriously, in Arab al-Amshe, also in the north. This second attack involved the simultaneous use of drones carrying explosives and guided antitank missiles. In both cases, the defensive systems that performed so successfully last weekend failed to stop the drones and missiles. Ron Ben-Yishai has a straightforward explanation as to why: the Lebanon-backed terrorist group is getting better at evading Israel defenses. He explains the three basis systems used to pilot these unmanned aircraft, and their practical effects:

These systems allow drones to act similarly to fighter jets, using “dead zones”—areas not visible to radar or other optical detection—to approach targets. They fly low initially, then ascend just before crashing and detonating on the target. The terrain of southern Lebanon is particularly conducive to such attacks.

But this requires skills that the terror group has honed over months of fighting against Israel. The latest attacks involved a large drone capable of carrying over 50 kg (110 lbs.) of explosives. The terrorists have likely analyzed Israel’s alert and interception systems, recognizing that shooting down their drones requires early detection to allow sufficient time for launching interceptors.

The IDF tries to detect any incoming drones on its radar, as it had done prior to the war. Despite Hizballah’s learning curve, the IDF’s technological edge offers an advantage. However, the military must recognize that any measure it takes is quickly observed and analyzed, and even the most effective defenses can be incomplete. The terrain near the Lebanon-Israel border continues to pose a challenge, necessitating technological solutions and significant financial investment.