NPR White House reporter Ayesha Rascoe and Fox News senior Capitol Hill producer Chad Pergram join Here & Now's Jeremy Hobson and Lisa Mullins to review the escalating tensions with Iran and other news in politics this week. Also, graduation speakers all around the country are sending a warning to 2020 presidential hopefuls: have a plan to get to zero emissions in 11 years, or lose our votes. That and more, in hour one of Here & Now's June 21, 2019 full broadcast.