I beg to differ. Nothing to do with Iran. Azerbaijan is locked in a conflict with Armenia over Nagorny Karabakh region. Armenia is backed politically by Russia, the country that also sells weapons to Azerbaijan, but has less of a political influence over its oil-rich neighbor. Armenian diaspora is also very influential, especially in France and the USA, Hence, Azerbaijan in the late-90s found itself under de facto arms embrago. The only country (besides Turkey) who would sell weapons to Azerbaijan. At that time period, Israel was also pressed for hard currency, oil supplies. AND had very close ties to Azerbaijan because Jews and Muslims enjoyed a very warm relationship during the Soviet era. At that point time, Iranian issue wasn't part of the equation, not sure even if it's now.