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.

  • 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.

  • Twitter War Forges Ahead: Following President Trump’s all-caps Twitter 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.

  • 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.

Cheddar's Hena Doba with the latest.

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