 Complete the following phrase:  Relations between Baloch separatists and Baathist Iraq had historical roots and were strong up until the 2003 U.S.-led invasion of Iraq. Following the Indo-Pakistani War of 1971, Iraq had begun to collaborate with the Soviet Union in launching a covert operation to provide military aid to Baloch insurgents operating in Pakistan and Iran. The aim of this operation was to destabilize the two countries by helping dissident Baloch rebels in their fight against the Iranian and Pakistani states that were close allies with the United States. The operation remained modestly successful during the early 1970s, but ultimately failed when there was unrest amongst the Baloch nationalist leaders involved in the 