Trump vows Iran will ‘pay’ for killing US troops. What comes next?

Iran’s killing of three additional U.S. service members has crossed a red line President Donald Trump has repeatedly drawn, forcing him to decide whether to escalate the existing campaign or take the far riskier step of expanding the conflict.

Over the weekend, first Lt.

Tyler James Feehan of Hawaii and Pvt.

Isabella Gonzales of Texas […] ...