ISLAMABAD, April 10 -- Iran has announced it will take part in the upcoming negotiations in Islamabad, but voiced serious doubts about the reliability of the United States (US), citing concerns over its "deceptive nature."

Read More: Pakistani officials say situation under control ahead of US-Iran talks

Iranian Vice President Mohammad Reza Aref said Tehran would participate actively and with full authority in the talks, aiming to strengthen its recent military gains through diplomacy. However, he stressed that deep mistrust of Washington remains a key issue.

Aref also praised Pakistan's efforts in facilitating a temporary ceasefire, saying Islamabad played a constructive role in helping reduce tensions between Iran and its adversaries,...