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 warns of an "unprecedented" retaliation if Israel attacks, while President Trump describes the Middle East as a "dangerous place."

Uranium ore that miners dig up is relatively harmless. But it contains tiny amounts of a rare radioactive isotope, Uranium 235, that can be used to power nuclear reactors at low levels of enrichment, and to fuel atom bombs at higher levels. The percentage of U-235 in mined uranium is less than 1 percent.