Over 20 countries, including Greece and Australia, have joined the U.S.-led coalition to safeguard commercial traffic in the Red Sea from attacks by Yemen's Houthi movement. Some countries have chosen not to be publicly named due to political sensitivities. The coalition, known as Operation Prosperity Guardian, involves joint patrols in the Red Sea waters near Yemen. The crisis in the Red Sea has been exacerbated by the war between Israel and Hamas, with Iranian proxies such as the Houthis and Hezbollah getting involved.