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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President Donald Trump’s 2020 reelection campaign was powered by a cell phone app that allowed staff to monitor the movements of his millions of supporters, and offered intimate access to their social networks.
Rep. Chris Pappas is optimistic that President Donald Trump will sign the bipartisan Veterans COMPACT Act to provide mental health care and prevent veteran suicides.
the Trump administration’s unwillingness to begin steps to transition power to President-elect Joe Biden is preventing him from creating a national response, said Kathleen Sebelius, former United States Secretary of Health and Human Services under President Barack Obama.
President-elect Joe Biden on Monday said his administration would strengthen the country's vulnerable economy despite the exploding pandemic as he pushed forward with the business of preparing to assume the presidency.
President Donald Trump has hailed developments in the race for a vaccine for the resurgent coronavirus. He delivered his first public remarks Friday since his defeat by President-elect Joe Biden, even as he refuses to concede the election.
The reason for such calm is that Wall Street doesn't see Trump's anger, tweets or legal actions changing the results. And encouraging data about a potential COVID-19 vaccine has renewed investors' optimism even though virus cases are on the rise.
Just days following the presidential election, Twitter has stepped up its efforts to crackdown on misinformation, but questions are being raised about how marketers and users will interact with social media platforms going forward. Cheddar's Michelle Castillo reports.
New York's Lieutenant Governor, Kathy Hochul, joined Cheddar to discuss new state guidelines set to take effect as COVID-19 cases spike nationwide.
The report by Deutsche Bank proposed a 5% daily tax on each employee that continues to work from home.
California Rep. Ami Bera joined Cheddar to discuss what a transition to the Biden administration could look like for Americans in regards to the coronavirus pandemic. Bera also discusses how a Biden administration will tackle COVID-19 with science.
