Iranian President Mahmoud Ahmadinejad said here on Sunday that the interference of foreigners served the root cause of all tensions and divisions in the region, demanding foreign forces to leave the region.

"The region has no need for alien troops and they should return home and let the regional states take care of their own affairs," he said while addressing a ceremony of the Army Day which was held Sunday morning in Tehran.

The past experiences have proved that the best way to establish and safeguard a durable security in the region is the coordination and cooperation of all regional governments and nations, he said.

In his speech, the Iranian president also attributed the regional turmoil to Isreal, saying that "this regime is main instigator of sedition and conflict in the region."

"The Zionist regime is on its way to collapse," he said.

He also stated that "I want its supporters and creators to stop backing it and allow the regional nations and the Palestinians to settle things with them."

Currently, the U.S. armed forces are stationed in some countries including Iraq, Bahrain and Saudi Arabia in the region.

Iran wants peace, progress and security for all, the president said.

Praising the strength of the Iranian army, he said the Islamic Republic of Iran's army was so powerful that no enemy dared to invade the country.

Iranian top military and political officials, as well as foreign diplomats, were also present at the event.

Different army units paraded during the ceremony to demonstrate their military capabilities as well as their latest achievements.