Iran’s Deputy Foreign Minister Kazem Gharibabadi said the Iranian delegation held two rounds of meetings with Qatari and Pakistani mediators in Doha, where Tehran raised what it described as U.S. violations of its obligations under the memorandum of understanding (MoU), according to Iranian state media.

Gharibabadi told state broadcaster IRIB that the first meeting was held under the Monitoring and Implementation Working Group, one of four bodies established under the U.S.-Iran MoU.

During the meeting, the Iranian delegation raised what it called the “U.S.’s violation of its obligations under Article 1 of the MoU,” which calls for an end to war on all fronts. The discussions also covered reports about U.S. efforts to strengthen military equipment and forces in the region, as well as what Iran described as threatening and interventionist statements by U.S. officials.

The participants agreed to establish an immediate communication channel within a day and to formally document the MoU’s shortcomings so the issues could be reviewed and addressed.

The second meeting, attended by Qatari officials and representatives of the country’s central bank, focused on the release of about $6 billion in frozen Iranian funds.

According to Gharibabadi, the talks discussed issues related to part of the initial $6 billion, with an understanding that Iran would use the funds to purchase goods based on its “declared needs.”