By Ahmad Ghaddar LONDON (Reuters) – Yemen’s Houthis have been targeting vessels in the southern Red Sea and the Bab al-Mandab strait in attacks the Iran-aligned group says aim to support the Palestinians as Israel and Hamas wage war. On Tuesday, the Houthis said they had carried out a military operation against a Norwegian commercial tanker in the Red Sea, with their spokesman vowing to continue blocking ships heading to Israeli ports until Israel allows the entry of food and medical aid into Gaza. WHAT ARE THE RECENT HOUTHI ATTACKS? * Dec. 12: Houthi spokesman says group targeted Norwegian co…