A year and half of nuclear talks between Iran and major powers were creeping toward the finish line on Friday as negotiators wrestled with sticking points including questions about Tehran's past atomic research.

• July 3, 2015

The global nuclear watchdog said on Wednesday its boss would fly to Tehran to discuss one of the biggest sticking points that need to be resolved so that Iran and world powers can reach a breakthrough final nuclear deal by a new deadline of next week.

• July 1, 2015

Iran and six world powers - the United States, Britain, France, Germany, Russia and China - are in what may be the final phase of negotiations aimed at securing a deal on sanctions relief in exchange for limits on Iranian nuclear activities.

• June 30, 2015

Iran and six world powers - the United States, Britain, France, Germany, Russia and China - are in what may be the final phase of negotiations aimed at securing a deal on sanctions relief in exchange for limits on Iranian nuclear activities.

• June 28, 2015

Imports of energy and life-saving medicines top the list of products in jeopardy if Greece defaults on its debt and moves closer to exiting the euro zone.

• June 16, 2015

Iranian President Hassan Rouhani said on Saturday a comprehensive nuclear deal could be delayed if world powers brought new issues into play, and he would not accept a U.N. inspections regime that jeopardized state secrets.

• June 13, 2015

The annual report of the U.N. nuclear watchdog has been approved by its board of governors despite Russia's protests against it listing a nuclear site near Crimea's Sevastopol as being in Ukraine, according to a document seen by Reuters.

• June 9, 2015

U.S. stocks rose slightly on Tuesday, bouncing back partially from the previous day's decline as higher oil prices helped energy shares, but the dollar slipped on global economic concerns.

• June 9, 2015