These are the headlines you Need2Know:
* **Trump Threatens Iran on Twitter:**
President Trump lashed out against Iranian President Hassan Rouhani late Sunday, warning him -- in an all-caps [tweet](https://twitter.com/realDonaldTrump/status/1021234525626609666) -- to "never, ever threaten the United States again or you will suffer the consequences the likes of which few throughout history have ever suffered before." His tweet comes in response to Rouhani's warning to Trump that "war with Iran is the mother of all wars." Read the details on [NPR.](https://www.npr.org/2018/07/23/631454795/trump-to-irans-president-never-ever-threaten-the-u-s-again)
* **Deadly Shooting in Toronto:**
Two people died and a dozen others were wounded in Toronto after a shooter opened fire in a popular neighborhood late Sunday. Neither of the victims has been identified. Authorities say the gunman is also dead, and they are now investigating the motive behind the shooting. Read the latest on [CNN.](https://www.cnn.com/2018/07/22/americas/toronto-restaurant-shooting/index.html)
* **Mourning Boat Accident Victims:**
The 17 victims of the duck boat accident in Missouri were remembered in a service on Sunday near the site of the accident. The memorial came as federal investigators are examining the boat's black box and video footage. Read more at [CBS News.](https://www.cbsnews.com/news/branson-community-mourns-missouri-duck-boat-victims-today-2018-07-22/)
* **Italian Wins the British Open:**
Francesco Molinari claimed the Claret Jug on Sunday, becoming the first Italian to win a major. He outlasted Tiger Woods, Jordan Spieth, Rory McIlroy and others to secure the prize. Read more at [BBC.](https://www.bbc.com/sport/golf/44918313)
Cheddar's Hope King gets into the latest.
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As negotiations drag on in Washington, DC over President Biden's social spending bills, Senate Democrats have introduced a new idea to fund Biden's plans: taxing the unrealized capital gains held by billionaires. Barron's reporter Sabrina Escobar joins Cheddar News' Closing Bell, where she explains what's in the billionaire tax proposal, who it will impact, and why it's on the table.
Hunter Walker joins Cheddar News to talk about his report in Rolling Stone that revealed how members of Congress and the White House helped plan the protest that turned violent on January 6.
Jill and Carlo discuss the pending approval for Pfizer's vaccine for kids, the state of anti-Semitism three years after Tree of Life, potential criminal charges in the 'Rust' prop gun shooting and more.
Texas Governor Greg Abbott, a Republican, signed a bill into law on Tuesday that restricts transgender students from playing on sports teams that correspond with their gender identity. Democratic State Representative Mary E. Gonzalez joined Cheddar to discuss the ramifications for transgender youth the new law represents. She also disputed the bill's proponents who argue that the measure is a matter of fairness for girls in sports, noting that various medical groups have affirmed that transgender athletes do not inherently hold an advantage over cisgender ones.
COP26 been dealt a blow as Chinese President Xi Jinping and Russian President Vladimir Putin, whose countries are responsible for a third of the world's annual greenhouse gas emissions, will not be in attendance. Bertrand Piccard, Chairman and Founder of the Solar Impulse Foundation, joins Cheddar Climate, where he discusses what he expects to see when the summit commences in Glasgow.
Social media platforms TikTok, Snapchat, and YouTube are facing questions in DC about consumer protections, data security, and product safety for young users. Emily Birnbaum, tech lobbying and influence reporter at Politico, joined Cheddar to provide some background into what led to the congressional hearing and the potential outcome. Birnbaum noted that social media platforms have been attempting to distance themselves from Facebook and the ongoing bad press it garnered in recent months.