Hezbollah chief Hassan Nasrallah promised that Israel would pay “in blood” in a speech on Friday in response to Israel’s killing of ten civilians in southern Lebanon two days earlier. The speech came after a week of intensified cross-border clashes between Hezbollah and Israel, with the former killing one Israeli soldier and injuring eight more in missile attacks on 14 February. Israel responded with wide-ranging airstrikes on the same day, killing three fighters and ten civilians, including three children and seven members of a single family. “The price of this blood will also be blood, not p…