EU foreign policy chief Catherine Ashton said Sunday a final accord on Iran's nuclear programme cannot be guaranteed, during a landmark visit underscoring a thaw in Tehran's ties with the West. Ashton's official visit to Tehran comes after Iran signed a preliminary deal in November with world powers under which it agreed to curb its disputed nuclear activities in exchange for sanctions relief. The breakthrough was made possible after last year's election of Iranian President Hassan Rouhani, viewed as a relative moderate who has the ear of supreme leader Ayatollah Ali Khamenei. "This interim agreement is really important but not as important as a comprehensive agreement (which is)... difficult, challenging, and there is no guarantee that we will succeed," Ashton told a joint news conference with Iranian Foreign Minister Mohammad Javad Zarif.

AMHERST, Mass. (AP) — Jordair Jett scored on a driving layup with 3 seconds to play and No. 17 Saint Louis snapped a three-game losing streak with a 64-62 victory over Massachusetts on Sunday as the Billikens won the Atlantic 10 regular season title outright for the second straight season.