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The eastern approaches are similarly secured by desert, which begins about 20 to 30 miles east of the Jordan River. While indigenous forces exist in the borderland east of the Jordan, they lack the numbers to be able to penetrate decisively west of the Jordan. Indeed, the normal model is that, so long as Israel controls Judea and Samaria (the modern-day West Bank), then the East Bank of the Jordan River is under the political and sometimes military domination of Israel — sometimes directly through settlement, sometimes indirectly through political influence, or economic or security leverage.
Israel's vulnerability is in the north. There is no natural buffer between Phoenicia and its successor entities (today's Lebanon) to the direct north. The best defense line for Israel in the north is the Litani River, but this is not an insurmountable boundary under any circumstance. However, the area along the coast north of Israel does not present a serious threat. The coastal area prospers through trade in the Mediterranean basin. It is oriented toward the sea and to the trade routes to the east, not to the south. If it does anything, this area protects those trade routes and has no appetite for a conflict that might disrupt trade. It stays out of Israel's way, for the most part. Moreover, as a commercial area, this region is generally wealthy, a factor that increases predators around it and social conflict within. It is an area prone to instability. Israel frequently tries to extend its influence northward for commercial reasons, as one of the predators, and this can entangle Israel in its regional politics. But barring this self-induced problem, the threat to Israel from the north is minimal, despite the absence of natural boundaries and the large population. On occasion, there is spillover of conflicts from the north, but not to a degree that might threaten regime survival in Israel.
The neighbor that is always a threat lies to the northeast. Syria — or, more precisely, the area governed by Damascus at any time — 1s populous and frequently has no direct outlet to the sea. It is,
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