Iran successfully tested a rocket that can deliver satellites into orbit, state television reported on Thursday, an action the United States said breaches a U.N. Security Council resolution because of its potential use in ballistic missile development.

Iranian state television showed footage of the firing of the rocket, mounted on a launchpad carrying pictures of Ayatollah Ruhollah Khomeini, founder of the Islamic Republic, and Supreme leader Ayatollah Ali Khamenei.

The rocket launch violated United Nations Security Council Resolution 2231, State Department spokeswoman Heather Nauert said on Thursday.

That resolution, which endorsed a 2015 nuclear deal between Iran and world powers, calls upon Iran not to undertake activities related to ballistic missiles capable of delivering nuclear weapons, including launches using such technology. It stops short of explicitly barring such activity.

“We would consider that a violation of UNSCR 2231,” Nauert said at a briefing with reporters when asked about the launch. “We consider that to be continued ballistic missile development. … We believe that what happened overnight, in the early morning hours here in Washington, is inconsistent with the Security Council resolutions.”

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