CBS World News Roundup, 8/4

CBS World News Roundup
Tuesday, August 4th
Isaias rumbles ashore in North Carolina, and threatens much of the East Coast with powerful winds and heavy rains. President Trump defends his coronavirus response. Newly-leaked videos show the George Floyd encounter -- from an officer's perspective. Correspondent Steve Kathan has the CBS World News Roundup for Tuesday, August 4, 2020.