no because we have many of experience with US and French air defense systems while we have Zero experience on any Russian Air Defense system other than man-portable ones
if we aquire Russian air defense systems then it means we are starting from Zero again !!
as i mentioned earlier , its on Janes but for subscribers only and written by Henry Marter (or Martr , unsure of the name) as an English source
the Arab sources are Khaleeji military magazines and mostly unavailable to the internet. the UAE airforce magazine (i think edition #180) has mentioned before that the Kingdom has replaced all the F-15S radars
no because there are differences , a guy in the RSAF told me the Russian jet fighters are different and gave a one simple example that it measures the altitude by meters instead of feet (which Saudi pilots are used to is feet and not meters)
secondly , adding US and Russian jet fighters in one Airforce will make it extremely expensive to operate , hard to act together , hard to maintain , hard to train and hard to gain experience
thirdly , during the time the F-15C/D's were delivered (1982) , there was no Saudi-Soviet relations , infact it was terrible (Afghanistan war)
fourthly , the Russian fighter planes have very terrible record in past wars and therefore i can not trust it
by the way what does the terms (AFAIK) and (IMO or IMHO) mean ?