Separately, a senior Saudi official told journalists that a Houthi attack on southern Saudi Arabia on Thursday had wounded 11 civilians, including a young child. Dozens of countries have been invited to join the coalition and, on Thursday last week, Saudi Arabia said 13 countries had agreed. What is the response to the Houthi attacks on Saudi Arabia? On July 29, joint strikes by Saudi Arabia and the US targeted PMF headquarters in Iraq, killing more than 20 people and wounding at least 30 others. The Houthis’ attacks on Saudi oil companies and in the Red Sea have prompted fears that global oil and shipping could be affected.