The Houthis in recent months have stepped up attacks on shipping in the Red Sea and the Gulf of Aden, demanding that Israel end the war in Gaza, which has killed more than 36,000 Palestinians there. The war began after Hamas-led militants attacked Israel on Oct. 7, killing about 1,200 people and taking around 250 hostage.A Greek-owned, Marshall Islands-flagged bulk carrier that came under attack by Yemen’s Houthi rebels earlier this week had a cargo of grain bound for Iran, the group’s main benefactor. Will Iran stop sponsoring Houthis ?