Iran is the main reason for stability in the region. Irans efforts to bring stability in the region is quite rationale as it is in Irans benefit. A secure region will lead to secure Iran.
The key to stability in West Asia has very different definitions in American and Persian dictionaries. Iran says stability can be maintained only by regional unity and secured by regional powers. The US appears to see stability in omitting regional powers and sowing discord among neighbours. Theres over 11.5 thousand kilometres between the US and Iran.