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 four Republican presidential candidates debating Wednesday night mostly targeted each other instead of Donald Trump. Former United Nations Ambassador Nikki Haley took the brunt of the attacks as she gets more interest from donors and voters.
Word about McCarthy's future had been expected the approach of the filing deadline to seek reelection. His departure will leave the already paper-thin House GOP majority even tighter, with just a few seats to spare.
Russian President Vladimir Putin began a rare overseas trip that will include a meeting with Saudi Arabia's crown prince, Mohammed bin Salman.
The State Department said Tuesday that Russia rejected its proposed offer to release detained Americans Paul Whelan and Evan Gershkovich.
The Justice Department has announced war crime charges against four Russian nationals in connection with the invasion of Ukraine.
Iran said it sent a capsule that is capable of carrying animals into space.
The Senate has confirmed the promotions of hundreds of military officers after Republican Senator Tommy Tuberville dropped his months-long hold over the process.
Four candidates will face off tonight in the latest Republican presidential primary debate. Columnist and political analyst Jonathan Harris joined Cheddar News to break down tonight's event.
House Republicans are expected to vote next week to formalize the impeachment inquiry into President Joe Biden.
The Senate in a single stroke has approved about 425 military promotions after Sen. Tommy Tuberville of Alabama ended a monthslong blockade of nominations over a Pentagon abortion policy.
