Iran crosses last red line; UN sanctions ahead?

Iran’s abrupt resumption of its nuclear program this week, throwing Tehran’s clerical regime into open conflict with the rest of the world, appears to have doomed current diplomatic efforts to curb the country’s nuclear ambitions.

Ending a two-year freeze on research into uranium enrichment – an essential step in the production of both nuclear reactors and bombs – Iranian officials reopened the Natanz nuclear research facility on Tuesday. European leaders who had negotiated the research suspension said the move marked the end of their readiness for talks.