21. Within Comecon , there were occasional struggles over just how this system should work. 22. On the economic front, Comecon was rediscovered. 23. Thus, reducing indebtedness to the West also became a top priority within Comecon . 24. "' Interflug hub at Berlin Sch�nefeld Airport, focusing on Comecon countries. 25. Other countries in Comecon also received subcontractor orders. 26. _July 11, 1972 : Cuba joins Comecon , Soviet-led economic bloc. 27. Foreign trade with Comecon nations grew substantially. 28. As a result, Comecon economies generally showed strong growth in the mid-1970s. 29. The 1985 program provided a general framework for Comecon 's new direction of development. 30. Western specialists have debated the political motivation of this implicit price subsidy to Comecon members.