DUBAI (Reuters) – Iran held a funeral procession on Tuesday in the centre of the capital Tehran for Revolutionary Guards Colonel Hassan Sayad Khodai, who was shot dead by two people on a motorcycle, and his commander vowed to avenge the attack. State television showed crowds surrounding a truck carrying Khodai’s casket, wrapped in Iran’s flag and strewn with flowers. Mourners held portraits of Khodai, who was gunned down in broad daylight in front of his home in central Tehran on Sunday. “Iran’s response to any threat or action will be harsh. But we will determine when and how it will be and i…