Complex sentence: From 1968 to 1973, the BLF was supported by Iraq in an Iranian Baluch revolt; it reduced its support to a low level after Iranian Baluchi leaders made a deal with the Shah of Iran.
Split into simpler sentences: From 1968 to 1973, the BLF was supported by Iraq in the Iranian Baluch revolt. Iraq reduced its support after Iranian Baluchi leaders made a deal with the Shah of Iran.