display
The US military carried out air strikes in eastern Syria on the orders of President Joe Biden.
The US Department of Defense said the target of the attacks was "multiple facilities" at a border crossing.
These were used by militias supported by Iran, said spokesman John Kirby on Thursday evening (local time).
The air strikes were a "proportionate" response to recent attacks against US soldiers and their international partners in Iraq.
"The mission sends a clear message," said Kirby.
President Biden is ready to act when it comes to protecting US military personnel and their allies.
At the same time, the proportionate attacks were deliberately carried out in order to "de-escalate the situation in eastern Syria and Iraq," said Kirby.
According to the Pentagon, the destroyed infrastructure was used by the Shiite militia Kataib Hezbollah, among others.
A civilian contractor from the international military coalition was killed and several people were injured in a rocket attack on the northern Iraqi city of Erbil last week.
The attack had fueled fears of further violence against US and international forces in Iraq.
A total of 14 rockets were shot down.