MAJDAL ZOUN, Lebanon — Buried beneath a hilltop village in southern Lebanon, just kilometers from the Israeli border, the Hezbollah terror group built an underground drone “airbase” from which it launched Iranian-made unmanned aerial vehicles at Israel. The subterranean facility, guarded by massive steel blast doors, was built in the past decade with direct Iranian assistance, including planning and funding, Israeli military officials told The Times of Israel during an organized media tour of the site last week. Journalists were brought into Lebanon at dusk, so that the visit to the tunnel would take place under the cover of darkness...