Although the most recent acts of terror in Canada came as a surprise to most, they are not unprecedented: a large-scale attack was foiled in 2006, and two more in 2013. Canada is home to at least 80 individuals who returned after joining terrorist organizations abroad. The caliph of Islamic State recently called on Muslims in Canada (and elsewhere) to kill “non-believers,” and an IS video explicitly suggested running people over with cars. As Jonathan D. Halevi writes:

The choice of Canada as a terror target is part of the overall strategy of the Islamic State and the other radical Islamic organizations to weaken the West, dissuade it from a military campaign against radical Islam, and remove all Western presence from the Middle East and Muslim countries. The goal is to expand the caliphate’s borders so as to enable an anti-Western jihad campaign that will bring about global Islamization. The success of the terror attacks in Canada will likely encourage terror groups in the United States, which is Islamic State’s supreme target, to carry out domestic attacks.

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.