U.S. Secretary of State John Kerry and Iran's Foreign Minister Mohammad Javad Zarif pose for a photograph before resuming talks over Iran's nuclear program in Lausanne on March 16, 2015. Reuters/Brian Snyder

Updated at 2:21 p.m. EDT: President Barack Obama is scheduled to deliver an address Thursday from the White House's Rose Garden in response to the announcement from the Iran nuclear talks in Lausanne, Switzerland.

Earlier in the day, Iranian Foreign Minister Javad Zarif joined Frederica Mogherini, the European Union high representative for foreign affairs, to announce a breakthrough in negotiations over Iran’s nuclear programs that Zarif called “a major step forward” and “a gain for all parties concerned.” Iran has agreed to restrict its nuclear capacity in exchange for lifting international sanctions.

Watch the live stream here:

Original story: U.S. Secretary of State John Kerry is slated to announce Thursday the culmination of years of talks over Iran's nuclear programs. Over the past eight days, Iranian Foreign Minister Mohammad Javad Zarif has met with Kerry and their counterparts from Britain, France, Russia, China and Germany to bridge gaps in a draft agreement over Iran's nuclear technologies. Zarif hinted on social media Iran and the six world powers had reached a breakthrough.

"Found solutions. Ready to start drafting immediately," Zarif said on his official Twitter account late Thursday.

Kerry also took to Twitter and announced that a "final deal" was still on the works. "#EU, P5+1, and #Iran now have parameters to resolve major issues on nuclear program. Back to work soon on a final deal."

The six world powers have sought to ensure in the negotiations that Iran would be unable to manufacture a nuclear bomb within a year. Iran has denied that it wants the capacity to make nuclear weapons, but rather it wants the ability to produce nuclear power. Iran has participated in the negotiations largely to have the international sanctions imposed by the other countries lifted, according to Haaretz.

Watch a live stream of Kerry's speech below in Lausanne, Switzerland: