▁it ▁is ▁intended ▁for ▁purely ▁def ensive ▁purposes . ▁ ▁Se j il - 2 : ▁Se j il - 2 ▁is ▁an ▁upgrad ed ▁version ▁of ▁the ▁Se j il . ▁The ▁Se j il - 2 ▁two - stage ▁solid - f uel ▁miss ile ▁has ▁a ▁ 2 , 0 0 0   km ▁range ▁and ▁was ▁first ▁test - f ired ▁on ▁ 2 0 ▁May ▁ 2 0 0 9 . ▁The ▁Se j il - 2 ▁surface - to - sur face ▁medium - range ▁ball istic ▁miss ile ▁( MR B M ) ▁was ▁first ▁tested ▁eight ▁months ▁prior ▁to ▁the ▁actual ▁test ▁launch , ▁which ▁took ▁place ▁in ▁the ▁central ▁Iran ian ▁province ▁of ▁Sem nan . ▁Im prov ements ▁include ▁better ▁navigation ▁system , ▁better ▁target ing ▁system , ▁more ▁payload , ▁longer ▁range , ▁faster ▁lift - off , ▁longer ▁storage ▁time , ▁quick er ▁launch ▁and ▁lower ▁detection ▁possibility . ▁On ▁December ▁ 1 6 , ▁ 2 0 0 9 , an ▁upgrad ed ▁version ▁of ▁Se j il - 2 ▁was ▁test ▁fired . ▁This ▁new ▁version ▁of ▁the ▁Se j il - 2 ▁is ▁faster ▁during ▁the ▁power ed ▁flight ▁portion ▁of ▁its ▁traject ory ▁and ▁also ▁during ▁the ▁re - entry ▁phase . It ▁is ▁also ▁harder ▁to ▁detect ▁for ▁anti - miss ile ▁systems , ▁as ▁it ▁is ▁covered ▁with ▁anti - rad ar ▁material . The ▁new ▁highly ▁man eu ver able ▁miss ile ▁is ▁also