article_snippet: (CNN)Talks to reach a deal on a framework agreement on Iran's nuclear program will be extended an extra day, U.S. officials said Tuesday.
article_snippet: "‎We've made enough progress in the last days to merit staying until Wednesday.
article_snippet: White House press secretary Josh Earnest said the talks in Lausanne would continue another day as "long as the conversations continue to be productive.
article_snippet: Diplomats and negotiators worked late as an initial deadline approached, but more time appeared necessary to reach a framework deal.
article_snippet: How long talks will continue was unclear.
article_snippet: Hamid Ba'idinejad from Iran's Foreign Ministry said earlier Tuesday there are no "artificial" deadlines and a deal will be reached, when each issue has been resolved.
article_snippet: Diplomats told CNN that there has been progress, but gaps remain.
article_snippet: Before you can iron out nitty-gritty technical details in a permanent, comprehensive pact  -- which carries the more important deadline of June 30 -- you have to agree on what you're going to talk about.
article_snippet: As for the March 31 date, there's nothing to stop the parties from continuing to talk -- though an Iranian official told state-run Press TV that no one had raised the idea of an extension as of late Monday.
article_snippet: So far, there's been a lot of meetings, with occasional smiles for cameras followed by foreign ministers talking behind closed doors.
article_snippet: After working through the previous night, representatives from the key players -- most of representatives from the key players foreign ministers -- met all day Tuesday to try to resolve differences in what Chinese Foreign Minister Wang Yi described as "the final stage" of "these marathon-like negotiations.
article_snippet: the parties are either on the verge of a milestone agreement or still separated on some crucial points, depending on who you listen to.
article_snippet: But in comments Monday to CNN, a more cautious Kerry conceded there was "a little more light there today, but there are still some tricky issues.
article_snippet: We are working very hard to work those through ... with a view to get something done.
article_snippet: But a comprehensive and final deal has remained elusive.