Ammon News - Iran and the United States have made some progress as they push for ​an agreement under Pakistani mediation, but more than halfway ‌through a two-week truce big splits remain including over Tehran's nuclear ambitions, a senior Iranian official said on Thursday.

"The trip ​of the Pakistani army chief to Tehran was ​effective in reducing differences in some areas, but ⁠fundamental disagreements still remain in the nuclear field.... More ​hopes have been created for extending the ceasefire and ​holding a second round of talks," the senior official said.

"The fate of Iran’s highly enriched uranium and the duration of Iran’s ​nuclear restrictions are among the highly disputed issues ​for which no solution has yet been found."

Pakistan's army chief Field ‌Marshal ⁠Asim Munir visited Tehran on Wednesday to try to prevent a renewal of the conflict. Pakistan hosted the war's first peace talks last weekend.

A spokesperson for Pakistan's Foreign ​Ministry said ​on Thursday ⁠that no dates have been decided for a second round of talks between the U.S. ​and Iran.

Iran and the United States failed ​last ⁠weekend to agree an end to the war that U.S. President Donald Trump launched alongside Israel with a ⁠surprise attack ​on February 28, triggering Iranian ​fire at Gulf states and igniting a parallel conflict in Lebanon.