The delegation arrived in Almaty on Sunday for the talks, which are due to kick off on Tuesday.
The talks will cover a range of topics including Iran’s nuclear energy program.
Iran and the P5+1 group have held several rounds of talks with a focus on Iran’s nuclear energy program. The last round of negotiations between Iran and the P5+1 group was held in Moscow in June 2012.
The Iranian negotiating delegation in the Moscow talks was led by Secretary of the Supreme National Security Council (SNSC), Saeed Jalili and the P5+1 group headed by EU foreign policy chief Catherine Ashton.
The United States, Israel, and some of their allies have repeatedly accused Iran of pursuing non-civilian objectives in its nuclear energy program.
Iran rejects the allegations, arguing that as a committed signatory to the nuclear Non-Proliferation Treaty (NPT) and a member of the International Atomic Energy Agency (IAEA), it has the right to use nuclear technology for peaceful purposes.
In addition, the IAEA has conducted numerous inspections of Iran’s nuclear facilities but has never found any evidence showing that Iran’s civilian nuclear program has been diverted to nuclear weapons production.
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