The White House put Iran "on notice" on Wednesday for test-firing a ballistic missile and said it was reviewing how to respond, abruptly adopting an aggressive posture toward Tehran that could raise tensions in the region.
It was unclear what actions the new Republican administration might take to try to rein in Iran for a missile launch that President Donald Trump and his top aides considered defiance of a nuclear deal negotiated in 2015 by then-Democratic President Barack Obama.
The tough talk committed the administration to back up its rhetoric with action, experts said.