Karabakh conflict should be resolved based on dialogue and international principles as it is very important for Iran its relations with Armenia and Azerbaijan to be expanded, spokesperson for the Iranian Foreign Ministry Bahram Qasemi said.

Referring to the recent visit of Armenian prime minister to Tehran, he said Tehran's stand with regards to all its neighbors is very crystal clear, transparent and definite as neighbors are among Iran's first priority in the country's foreign policy, IRNA reported.

Tehran is determined to broaden very consolidated relations with its neighbors based on mutual respect and non-interference in each other's affairs, he added.

The Islamic Republic of Iran is to spare no effort to help resolve the issue, he underlined.