WASHINGTON — Breaking a deadlock over the location and timing of new talks on its disputed nuclear program, Iran has agreed to resume its stuttering dialogue with world powers later this month in Kazakhstan, Iranian and Western officials said on Tuesday.

The agreement to meet in Almaty on Feb. 26 follows the imposition of punishing sanctions by the United States and its allies that has led to the devaluation of Iran’s currency.

There is a general sense among experts that 2013 will be a make or break year for the negotiations. President Obama has repeatedly said that he will not allow Iran to become a nuclear weapons state and indicated that military action is an option.

William Hague, the British foreign secretary, said Tuesday, “The need to make progress is increasingly urgent.” His statement said “Iran continues to enrich uranium in contravention of U.N. Security Council resolutions and on a scale that has no plausible civilian explanation.”