Dr Leonid Petrov comments on a Chinese balloon and other unidentified aerial objects discovered in the US

After the U.S. shot down a Chinese balloon in early February, three more unidentified flying objects were discovered over the United States. We talked about it with Dr. Leonid Petrov, a university academic and researcher in the study of North Korea and international relations in North East Asia.

FBI special agents assigned to the evidence response team process material recovered from the high altitude balloon Credit: AAP, AP / FBI