Hezbollah, Iran’s most powerful regional ally, has signaled privately that it does not intend to attack Israel, but Lebanon’s military has bolstered its presence in the country’s south to prevent rocket fire.

Top Lebanese officials said Monday they want to prevent the country, which is still recovering from the recent Israel-Hezbollah war, from being dragged into the ongoing conflict between Israel and Iran.

Israel and Iran have been enemies for decades — but this is their most sustained direct fighting ever. Here’s how a shadow war erupted into an overt conflict.