The U.S. Department of Homeland Security warned Americans of a "heightened threat environment" on June 22 that could include attacks on U.S. soil. That fear appeared to dissipate when Iran attacked a United States military base in Qatar June 23, injuring no one.

In a 48-hour whirlwind, President Donald Trump went from elated to indignant to triumphant as the fragile Israel-Iran ceasefire agreement came together, teetered toward collapse and ultimately coalesc