U.N. Nuclear Watchdog Rebukes Iran for Failure to Cooperate With Probe

BERLIN—The United Nations atomic agency’s board overwhelmingly passed a resolution rebuking Iran for failing to cooperate with an agency investigation, as Tehran said it had turned off some cameras monitoring nuclear-related activities and warned of further action in its nuclear program.

In a statement after the resolution passed, Tehran said it also would install hundreds of advanced centrifuges at its Natanz underground site, increasing its future uranium-enrichment capabilities and posing a fresh threat to the already slim chances of reviving the 2015 nuclear deal. The foreign ministry said other steps could follow.