Strange that anybody would by any sort of plane made in Russia . Their main claim to fame is the ease with which they fall out of the sky . Worst safety record in the world for passenger aircraft . Worse even than the democratic Republic of Congo !! Are you sure this order is not for children's toys?
from your "country" http://www.defence.pk/forums/military-forum/64364-f-35jsf-vs-su-35s-comparison.html