Actually,
if I can recall my history correctly the first to put twin tails on a fighter were the Russians. They were into anything that reduced supersonic drag and saved structural weight.
The F14 introduced twin tails into western design for the same reason, but compare the fin caps with its opponent the Mig 29.
The LERX were designed in to keep airflow attached at high alpha and the strakes added to the LERX to stabilise the vortex which was cracking the structure. Russian structures were a little more substantial and did not suffer as badly.
Just my two bobs worth, Three Wire
