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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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.
Russian news outlets are reporting that President Vladimir Putin is set to make a rare trip abroad this week.
President Joe Biden is preparing a package of healthcare measures that include cutting prescription drug prices.
The White House is urging Congress to pass President Biden's aid package for Ukraine warning that the U.S. will be out of funding by the end of the year.
A former U.S. diplomat has been arrested and accused of being a secret Cuban spy.
Philadelphia City Council passed legislation to ban ski masks in some public spaces, a measure supporters say will increase public safety amid high violent crime, but opponents argue it will unfairly target people without proof of any wrongdoing.
A federal appeals court ruled that former President Donald Trump won't have presidential immunity in civil lawsuits related to the January 6th attack on the Capitol.
