World News Roundup: 06/10

The US announces vaccine donations to poor countries as President Biden begins his first foreign trip. Keystone Pipeline killed. Will this summer see a tick explosion? CBS News Correspondent Steve Kathan has today's World News Roundup. To learn more about listener data and our privacy practices visit: https://www.audacyinc.com/privacy-policy Learn more about your ad choices. Visit https://podcastchoices.com/adchoices