Yemen's Houthis are seen as the most powerful of Iran’s non-state allies. Just days ago, they issued a series of warnings, saying their “finger is on the trigger.” That warning pha

Yemen's Houthis are seen as the most powerful of Iran’s non-state allies. Just days ago, they issued a series of warnings, saying their “finger is on the trigger.” That warning phase is now over, opening a third front against Israel from Yemen. Al Jazeera’s Yousef Mawry reports.