Iran says it has built and will activate a third nuclear enrichment facility, ratcheting up tensions with the U.N. immediately after its atomic watchdog censured Iran for failing to comply with obligations meant to prevent it from developing a nuclear weapon.

The International Atomic Energy Agency declared Iran was in breach of its Nuclear Non-Proliferation Treaty obligations by failing cooperate with an probe into undeclared nuclear material and activities at multiple sites.

Iran carried out secret nuclear activities with material not declared to the U.N. nuclear watchdog, the confidential report said.

Iran’s nuclear program remains a top focus for inspectors from the International Atomic Energy Agency, particularly as any possible deal between Tehran and the United States over the program would lik

Iran has further increased its stockpile of uranium enriched to near weapons-grade levels, a confidential report by the UN nuclear watchdog said Saturday and called on Tehran to urgently change course and comply with the agency’s probe.