Thousands of Iran-backed foreign fighters are reportedly poised to join forces with Hezbollah if its ongoing conflict with Israel along the Lebanese border escalates into all-out war. “We will be shoulder to shoulder with Hezbollah,” an official with an Iran-backed militia in Iraq told the Associated Press for a report Saturday. Another official with an Iran-backed group in Lebanon also said members of Iraq’s Popular Mobilization Forces, Afghanistan’s Fatimiyoun, Pakistan’s Zeinabiyoun and Yemen’s Houthi rebels could all travel to Lebanon to wage war against Israel. Some of the groups have alr…