Trump vows retaliation after ISIS kills 2 US troops, interpreter in Syria

• Two US Army soldiers and an interpreter were killed in Syria by an Islamic State gunman.
• President Trump vowed "very serious retaliation" following the attack.
• The ambush occurred in Palmyra during US counter-terrorism operations.
• The lone gunman, identified as an ISIS militant, was killed.
• Approximately 1,000 US service members are stationed in Syria, assisting Kurdish-led forces against ISIS remnants.

Why It Matters: Trump's vow of retaliation signals potential US escalation in Syria.