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.

Iran said Thursday it would soon open a third uranium enrichment site, while President Trump said that an Israeli strike on the country “could very well happen.”Iran’s announcement about the enrichment site came after the United Nations nuclear watchdog agency decided for the first time in two decades that Tehran had failed to comply with its nonproliferation obligations.

The U.N. nuclear watchdog's board of governors declared Iran in breach of its non-proliferation obligations on Thursday and Tehran announced counter-measures, as tensions rose in the Middle East before further U.