Since Hamas launched a new war with Israel on Oct. 7, the Lebanese militia Hezbollah has expressed solidarity with the Islamist Palestinian group through military action. It has fired missiles, mortars,

Hezbollah war grows as the two sides trade new fire, Hezbollah's leader accuses Israel of crossing "red lines."

It took years, three different shell companies, and an explosive called pentaerythritol tetranitrate, according to reports.