I want to know the answer to the following question:
When did Eduard Shevardnadze gain full membership in the Politburo?
All the background I'm provided with is that "On July 1, 1985, Gorbachev promoted Eduard Shevardnadze, First Secretary of the Georgian Communist Party, to full member of the Politburo, and the following day appointed him minister of foreign affairs, replacing longtime Foreign Minister Andrei Gromyko.". Is that enough to answer the question?