Unavailability dual polar image of sentinel1 for iran

why sentinel1 images for iran is singl polarization vv
while the whole world is hv-vv polrization?
I need hv-vv polarization radar image for my thesis.
please guide me.

Have you checked the observation scenarios?
True, Iran is not covered by dual-polarization. But check it from time to time, it’s not static…

thank you overmuch