Trump: 'Serious Retaliation' After ISIS Kills 3 US in Syria

• Three Americans, including two US service members and a civilian interpreter, were killed in a Saturday attack in central Syria.
• The United States blamed the Islamic State (IS) group for the assault, which also injured three other American soldiers.
• President Donald Trump warned of "very serious retaliation" for the attack, describing it as an IS incident in a dangerous part of Syria.
• The attack was the first to kill US personnel in Syria since the fall of Bashar Assad a year ago, despite improved US-Syria relations.
• The lone gunman, linked to IS ideology, was later killed; the Pentagon confirmed the civilian was a US interpreter.

Why It Matters: US vows strong retaliation after Americans killed in Syria, underscoring persistent ISIS threat.