app/assets/images/flags/cub.svg
<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" fill="#fff"><path fill="#002a8f" d="M0 0h800v400H0"/><path d="M0 80h800v80H0v80h800v80H0"/><path fill="#cf142b" d="M346.4 200L0 0v400"/><path d="M115.5 140l35.35 108.5-92.5-67h114.2l-92.5 67"/></svg>