I want to display an external web application inside my React application. I have achieved this through an iFrame.

1. As <iframe/> has security risks, shall we use <embed/> or <object/> tags?
2. Are <embed/> and <object/> tags safer than <iframe/> in terms of security?
3. Should we still make <iframe/> secure using sandbox & seamless attributes?
4. Are there better approaches than using iframe/embed/object tags?

Please advise.