Remember that even though there appears to be 2 runways in Dubai, it is just a mirage. The spacing has actually been increased since the 2nd runway was "opened" for "some operations". We waited how long for this damn runway and now it actually causes the increased spacing times to increase
Tehran are improving a lot, but they can also still be difficult to work with at times if you upset them. A common one is we knock them back on sending someone direct DESDI rather than via ORSAR as we have traffic via NADAM to effect. Their response is to deny all requests for direct DESDI or early release for the rest of the night. Makes life tough!