Belarus has several battalions equipped with Russian-made S-300 air defense systems on combat duty as part of the Russian-Belarusian integrated air defense .
"We have completed the first stage ofmodernization of the Belarusian S-300 air defense systems and agreed to intensify work on further deliveries of these systems to Belarus," Serdyukov said after a meeting of Russian and Belarusian defense officials in Minsk.
protection of the Russia-Belarus Union State's airspace and the creation of an integrated regional air defense network. and Minsk signed an February 2009 on the joint
"We are strengthening this network," Serdyukov said.
Modernized versions of S-300 have a engagement range of up to 150 kilometers (93 miles).