A rebuke of Iran led by the U.S. and its close allies at the global nuclear watchdog agency has drawn a vow by the Islamic republic to further ramp up uranium enrichment.

The Islamic Republic has begun to activate its modern centrifuges. This is allegedly a response to the decision of the International Atomic Energy Agency's Board of Governors regarding the country's peaceful nuclear program,

Iran has tried in vain to prevent a Western push for a resolution against it at the U.N. nuclear watchdog's board meeting by offering to cap its stock of uranium just shy of weapons grade, the watchdog and diplomats said on Tuesday.