The German Foreign Office has again warned all German nationals remaining in Lebanon to leave the country or make urgent preparations, amid escalating tensions between Israel and Iran – and the Iranian-backed Hezbollah militia in Lebanon. A Foreign Office spokeswoman in Berlin said on Thursday that another letter has been sent to Germans telling them to leave Lebanon without delay, as the world waits for Tehran’s response to the killing of two leading Israeli opponents, including a Hezbollah commander. Those who remain in the country “may have to fend for themselves in the crisis area for a lo…