As consultations continued here on a possible new cease-fire arrangement with Russia and Ukraine , Iran ’s foreign minister, Mohammad Javad Zarif, said on Sunday that Tehran does not favor another extension of the talks on limiting its nuclear program and expects economic sanctions to be quickly lifted if an accord is reached. “Sanctions are a liability; you need to get rid of them if you want a solution,” Mr. Zarif told a security conference. “This is the opportunity to do it, and we need to seize this opportunity,” he said of the long effort to forge an agreement. “It may not be repeated.” The nuclear talks have already been extended twice and face a late March deadline for hammering out the main outlines of an accord. The deadline for completing a detailed agreement is the end of June. With a Republican-led Congress in Washington, an extension […]