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.

IAEA Chief Rafael Grossi confirmed Israel’s strike on Iran’s Natanz facility caused radioactive and chemical contamination, as Tehran warns of a decisive response.

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.

Iran announced Thursday it will launch a new uranium enrichment facility after the United Nations nuclear watchdog determined the country was not in compliance with its nuclear obligations. The Iranian government issued a statement calling the resolution “politically motivated” and biased and saying it “has no choice but to respond.