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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Four candidates will face off tonight in the latest Republican presidential primary debate. Columnist and political analyst Jonathan Harris joined Cheddar News to break down tonight's event.
House Republicans are expected to vote next week to formalize the impeachment inquiry into President Joe Biden.
The Senate in a single stroke has approved about 425 military promotions after Sen. Tommy Tuberville of Alabama ended a monthslong blockade of nominations over a Pentagon abortion policy.
The presidents of three U.S. colleges and universities are testifying before a House Committee on their handling of anti-Semitic incidents after Hamas' attack in Israel in October.
The Supreme Court on Tuesday dismissed a case surrounding a Maine hotel that could have made it harder for people with disabilities to learn in advance whether a hotel's accommodations meet their needs.
Attorneys for former president Donald Trump missed their chance Monday to pause the gag order against their client in his civil fraud trial in New York.
Federal prosecutors opposed Hunter Biden's request to subpoena documents from former President Trump and other members of his administration.
The U.S. may form a naval task force to escort commercial ships through the Red Sea, days after Houthi rebels struck three vessels with missiles.
Treasury Secretary Janet Yellen is heading to Mexico this week to promote her agency's new strike force to help combat illicit fentanyl trafficking as the U.S. and China step up efforts to stop the movement of the powerful opioid and drug-making materials into the United States.
Sen. Bernie Sanders and the Democratic senators involved say they are firm in their stand that Israel's military must adopt substantive measures to lessen civilian deaths in Gaza as part of receiving the supplemental's $14.3 billion in U.S. aid for Israel's war.
