Protesters burn a U.S. flag during a demonstration over the U.S. airstrike in Iraq that killed Iranian Revolutionary Guard Gen. Qassem Soleimani, in Tehran, Iran, Jan. 3, 2020. Iran has vowed “harsh retaliation” for the U.S. airstrike near Baghdad’s airport that killed Tehran’s top general and the architect of its interventions across the Middle East, as tensions soared in the wake of the targeted killing. (AP Photo/Vahid Salemi)

By QASSIM ABDUL-ZAHRA and ZEINA KARAM

Associated Press

BAGHDAD (AP) — The United States killed Iran’s top general and the architect of Tehran’s proxy wars in the Middle East in an airstrike at Baghdad’s international airport early on Friday, an attack that threatens to dramatically ratchet up tensions in the region.

The targeted killing of Gen. Qassem Soleimani, the head of Iran’s elite Quds Force, could draw forceful Iranian retaliation against American interests in the region and spiral into a far larger conflict between the U.S. and Iran, endangering U.S. troops in Iraq, Syria and beyond.

The Defense Department said it killed Soleimani because he “was actively developing plans to attack American diplomats and service members in Iraq and throughout the region.” It also accused Soleimani of approving the attacks on the U.S. Embassy in Baghdad earlier this week.

Iran’s Supreme Leader Ayatollah Ali Khamenei warned that a “harsh retaliation is waiting” for the U.S.

Iranian state TV carried a statement by Khamenei also calling Soleimani “the international face of resistance.” Khamenei declared three days of public mourning for the general’s death.

Also, an adviser to Iran’s President Hassan Rouhani warned President Donald Trump of retaliation from Tehran. “Trump through his gamble has dragged the U.S. into the most dangerous situation in the region,” Hessameddin Ashena wrote on the social media app Telegram. “Whoever put his foot beyond the red line should be ready to face its consequences.”