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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President Joe Biden has memorialized Justice Sandra Day O’Connor as a pioneer in the legal world who inspired generations of women.
Former Maryland Gov. Martin O'Malley will take on the role of head of the Social Security Administration after the Senate voted to confirm him.
President Biden's pleas for Congress to approve more Ukrainian aid before year's end appears to be coming up short.
Republican Texas Gov. Greg Abbott has approved sweeping new powers that allow police to arrest migrants who illegally cross the U.S. border and give local judges authority to order them to leave the country.
Two former Georgia election workers who won a $148 million defamation judgement against Rudy Giuliani are asking for a court order barring him from continuing to repeat the lies he spread about them following the 2020 election.
A federal appeals court on Monday ruled that former Trump White House chief of staff Mark Meadows cannot move charges related to efforts to overturn the 2020 election in Georgia to federal court.
A federal judge has issued a temporary restraining order barring removal of a memorial to Confederate soldiers at Arlington National Cemetery.
The U.S. Justice Department has created a database to track records of misconduct by federal law enforcement officers that is aimed at preventing agencies from unknowingly hiring problem officers, officials said on Monday.
The House of Representatives recently passed a bill aimed at increasing transparency in healthcare.
In the Red Sea this morning, a U.S. warship, the USS Carney responded to a distress call by a commercial vessel after it came under attack.
