President Trump said the goal of the negotiations with Iran is to achieve "full dismantlement" of Tehran's nuclear program. Why it matters: Trump's remarks in an "Meet the Press" interview aired Sunday are the first time he's publicly announced the ambitious goal since nuclear talks began with Iran a month ago.

President Donald Trump said he would impose secondary sanctions on nations or companies buying Iranian oil, ratcheting up pressure on Tehran as nuclear talks with the US hit a snag.

The fourth round of nuclear talks between the U.S. and Iran, which were slated to be in Rome over the weekend, have been postponed, according to Oman’s foreign minister.  “For logistical