Australian Foreign Affairs Minister Julie Bishop has made a historic visit to Iran to build relations and gain information about the fight against ISIS. Bishop’s trip to Shiite Iran marks the first time an Australian foreign minister visited the country in 12 years.

Her visit would also follow the agreement reached last month requiring Tehran to accept tighter nuclear controls in exchange for the easing of economic sanctions. She delivered a detailed briefing to the Iranian government on the non-combat role of Australian ground troops in Iraq. Bishop will also have the chance to verify information from Iran about its plans in Iraq and seek assurances that the Iranian government will work to prevent Shia militia atrocities.

In her visit to Iran, she expressed her concerns about the possibility of Australian troops being caught up in fighting between ISIS and the Shia militia groups trained by Iran. Bishop’s visit came at highly delicate time after years of hostility due to Tehran’s aggressive push for nuclear weapons.

The Australian foreign affairs minister was invited to travel to Iran with her counterpart Mohammad Javad Zarif. She raised the issue of Shia militia groups causing the atrocities against the Sunnis. Bishop said it was a “very delicate situation” as both Iran and Australia have a common purpose of helping Iraqi forces defeat ISIS.

The Guardian reports that Bishop was unable to convince Iran to take back asylum seekers who were refused refugee status in Australia in the first high-level official talks. However, she said her discussion with the Iranian foreign minister on the matter would continue through a consular dialogue.

Meanwhile, Iran has agreed to share secret intelligence with Australia. Bishop revealed the result of a meeting with Iranian President Hassan Rouhani who also described ISIS as the “most significant global threat at present,” reports SMH. Intelligence sharing with Iran has become more likely with the U.S. and other world powers preparing to strike a bargain to ensure no nuclear weapons will be built in the region.

Bishop had wrapped up her visit to Iran on Sunday by declaring that a nuclear deal will hopefully be in reach. She believes the deal would satisfy countries that are critical of nuclear talks with Iran.

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