These are the headlines you Need2Know:
* **Toronto Shooter Had Tumultuous Mental History:**
The parents of slain shooter Faisal Hussain went public on his history of mental illness, but officials have not yet identified his motives. The 29-year-old shot and killed two and wounded at least a dozen on Sunday. Read the details [here](https://www.cnn.com/2018/07/24/americas/toronto-shooting-investigation/index.html).
* **Umbrellas Up, Northeasterners!:**
A flash-flood warning is in effect after heavy rainfall has flooded several Pennsylvanian towns. In Scranton, certain parts of Hershey park are submerged in water. See the map [here](https://twitter.com/NWS/status/1021536276095426560).
* **Twitter War Forges Ahead:**
Following President Trump’s all-caps [Twitter](https://twitter.com/realDonaldTrump/status/1021234525626609666) threat to Iranian President Hassan Rouhani, the Iranian Foreign Minister Mohammad Javad Zarif fired back on Monday, warning the U.S. to, “BE CAUTIOUS!” Read the full subtweet from Zarif [here](https://twitter.com/JZarif/status/1021471196242735104).
* **North Korea Tunes it Down:**
Just over a month after Trump met with North Korean leader Kim Jong-un in Singapore to discuss denuclearization, the country is dismantling several ballistic missile launch sites. Stay with the story [here](https://www.theguardian.com/world/2018/jul/24/north-korea-satellite-images-show-dismantling-of-missile-test-facilities-report).
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Saying gender identity is real, a federal judge temporarily blocked portions of a new Florida law that bans transgender minors from receiving puberty blockers, ruling Tuesday that the state has no rational basis for denying patients treatment.
With concerns about misinformation spreading online, European Union officials want to more closely regulate artificial intelligence, and they're asking the world's biggest tech companies for help.
Sens. Elizabeth Warren, Ron Wyden, Ed Markey, and Mazie Hirono sent a letter to top officials at Twitter expressing their concerns over the platform's privacy policy.
The world's largest cryptocurrency exchange Binance and its founder Changpeng Zhao are accused of misusing investor funds, operating as an unregistered exchange and violating a slew of U.S. securities laws in a lawsuit filed by the SEC.
A top EU official said companies should roll out the technology to recognize AI-generated content and "clearly label[s] this to users."
With the rail industry relying on longer and longer trains to cut costs, the Biden administration is handing out $570 million in grants to help eliminate many railroad crossings in 32 states.
A judge ruled that the Tennessee law restricting drag performances in public or where children are present is unconstitutional.
The United States Postal Service (USPS) said more than 5,300 postal employees were attacked by dogs while delivering mail in 2022. To spread awareness of this problem, the agency has launched a public service campaign called National Dog Bite Awareness Week.
It took a unilateral step Sunday to support the sagging cost of crude after two earlier cuts by other OPEC+ countries failed to push prices higher.
Nurse practitioners, who provided care for many trans adults, are now barred from providing transition-related care in the state.
