Weapons from Iran are showing up in the hands of Iraqi insurgents? Well, weapons from the US are showing up in the hands of Turkish insurgents.
If the parallels weren't close enough, this quote comes from terrorism expert Professor Ihsan Bal, "quite a number of [Turkish] people are ready to believe that America might have directly [given these] weapons to the terrorist organization."
I'm not accusing the US of purposely supplying weapons to insurgents (They are and some weird stuff is happening around it but that's another issue). I don't think the mere fact that US weapons turned up in Turkey means that the US purposely planted them there. Yet, the US military claims that Iran is planting weapons in Iraq and uses the mere fact Iranian weapons are found as evidence.
I'm really interested in is how the perceptions of populations create the need for more or less evidence backing up an accusation. When US weapons show up in Turkey, the Turks blame the US and the US blames the Iraqi police. When Iranian weapons show up in Iraq, the US blames Iran and visa versa. Americans don't need evidence to suspect Iran and the Turks don't need evidence to suspect the US.
The parallel quote from media expert Professor So and So would be, "quite a number of Americans are ready to believe that Iran might have directly given these weapons to the terrorist organization."