Pentagon statement:

• Strikes are in retaliation for attacks on US forces in recent days

• US President Biden ordered strikes against two facilities in Syria
  used by Iran’s IRGC and Iran-backed groups
• US will not tolerate
  attacks against personnel and will defend its interests
• US will take
  additional measures if attacks by Iran’s proxies continue
• Iranian backed
  attacks against US forces are “unacceptable and must stop”