10 More Uranium Plants, Iran Thumbs Nose at Obama

TEHRAN, Iran  — Iran approved plans Sunday to build 10 new uranium enrichment facilities, a dramatic expansion in defiance of the U.N. nuclear watchdog, days after it demanded Tehran stop construction on one plant and halt all enrichment activities.

Iran's defiance will likely heighten tensions with the West, which has signaled it is running out of patience with Iran's continuing enrichment and its balking at a U.N. deal aimed at ensuring Tehran cannot build a nuclear weapon in the near-term future. The U.S. and its allies have hinted at new U.N. sanctions if Iran does not respond.

The White House said the move "would be yet another serious violation of Iran's clear obligations under multiple U.N. Security Council resolutions and another example of Iran choosing to isolate itself."