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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Iowa lawmakers have passed a bill that would ban abortions after about six weeks of pregnancy.
The Biden administration unveiled a plan to fight fentanyl overdoses.
Members of a deeply conservative Amish community in Minnesota don't need to install septic systems to dispose of their “gray water,” the state Court of Appeals ruled Monday in a long-running religious freedom case that went all the way up to the U.S. Supreme Court.
The Associated Press reveals findings from SCOTUS ethics investigation.
Lawyers for former President Donald Trump are asking a judge to postpone his criminal trial without setting a new date as he stands accused of illegally hoarding classified documents at his Florida estate.
A court-appointed monitor is urging a judge to begin contempt proceedings against New York City over conditions at the troubled Rikers Island jail complex, setting the stage for a potential federal takeover of the jail system in the nation’s most populous city.
The Biden administration aims to control hidden healthcare fees.
Kansas must stop allowing transgender people to change the sex listed on their driver’s licenses, a state-court judge ordered Monday as part of a lawsuit filed by the state’s Republican attorney general.
President Joe Biden and King Charles III, two leaders who waited decades to reach the pinnacle of their careers, used their first meeting in those roles Monday to zero in on the generational challenge of climate change, prodding private companies to do more to bolster clean energy in developing countries.
Treasury Secretary Janet Yellen returned from China after a four-day trip there, calling it a "constructive visit."
