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).
Cheddar's Hena Doba with the latest.
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The director of national intelligence says artificial intelligence is speeding up the work of America's spy services.
Elon Musk is dialing back his threat to decommission a capsule used to take astronauts and supplies to the International Space Station for NASA. T
President Donald Trump is threatening to cut Elon Musk’s government contracts as their fractured alliance rapidly escalated into a public feud.
President Donald Trump wants his “big, beautiful” bill of tax breaks and spending cuts on his desk to be singed into law by Independence Day. And he’s pushing the slow-rolling Senate to make it happen sooner rather than later. Trump met with Senate Majority Leader John Thune at the White House early this week and has been dialing senators for one-on-one chats, using both the carrot and stick to encourage them to act. But it’s still a long road ahead for the bill. Senators want to make changes to protect Medicaid and to make sure some tax breaks become permanent. Elon Musk called the whole bill a "disgusting abomination.”
China has blasted the U.S. for issuing AI chip export control guidelines, stopping the sale of chip design software to China, and planning to revoke Chinese student visas.
Would U.S. companies go back to Russia if there’s a peace deal over Ukraine?
The explosive growth of the data centers is eliciting some pushback.
President Donald Trump’s doubling of tariffs on foreign steel and aluminum could hit Americans in an unexpected place: grocery aisles.
The Court of Appeals for the Federal Circuit on Thursday allowed the president to temporarily continue collecting the tariffs under the emergency powers law while he appeals the trade court’s decision.
President Donald Trump wants the world to know he’s no “chicken” just because he’s repeatedly backed off high tariff threats.
