Iran has warned it will ramp up its nuclear activities after the United Nations nuclear watchdog’s 35-member board of governors adopted a resolution Thursday declaring it in breach of its non-proliferation obligations.

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.

President Donald Trump said the United will come down on Iran “at levels never seen before” if the Middle Eastern country attacks.

Iran slammed the International Atomic Energy Agency’s vote as politically motivated as the region gears up for a potential Israeli strike.

Israel’s airstrikes damaged Iran’s nuclear program but likely fell well short of eliminating it, experts said, presenting Prime Minister Benjamin Netanyahu and the US with a quandary on what to do next.

The U.S. was represented at the UN Security Council's emergency session on Friday by State Department Senior Bureau Official McCoy Pitt, who said the U.S. was advised by Israel that the actions carried out against Iran overnight were "necessary for its self-defense."

Satellite images have emerged showing damage to Iranian nuclear sites following Israeli strikes. The IAEA chief, Rafael Grossi, confirmed significant damage at the Natanz nuclear site during a United Nations Security Council meeting.

On the heels of Israel's strikes on Iran over its nuclear program, here's a look at which nations currently possess nuclear weapons.

U.N. nuclear watchdog chief Rafael Grossi said on Friday he was ready to travel to Iran to assess the situation there after Israel carried out widespread military strikes that hit the sprawling nuclear complex at Natanz.