based on Su-27 Flanker, Su-34 has an armoured cockpit for side-by-side seating of its two-person crew. Su-34 is designed primarily for tactical bombing/attack/interdiction against ground and naval targets.
Su-34 will eventually replace Su-24 Fencer and Tu-22M Backfire.
Su-34 - basic aircraft model.
Su-32 - export model, offered to Algeria in 2012.
Su-34M / Su-34 NVO – modernized version.
Su-34ME – export version of Su-34M for Algeria. The export version differs from the Russian Su-34M only in communication systems and "friend or foe" system.