Israel’s recent assault on Hezbollah has dealt a blow to the Lebanese militant group, but how big a blow is unclear. This is partly because Hezbollah, like most armed groups, has shrouded its precise military capacity in secrecy. Hezbollah is supported by Iran, which sees it as its most important proxy in the region, and for decades, Tehran has funneled weapons and other military technology to the group. Here is a look at Hezbollah’s military strength as it wages war against Israel in support...