I echo this I did the A2 exam last year and it followed the pattern exactly. Part A was the Arms race ( a small reword of the exact question in my mock!) and Detente. I'm glad I had that rotation as I hated Sino-Soviet and wasn't a huge fan of peaceful coexistence.(Original post by Redmonds)
I am certain it will be Sino-Soviet relations and Peaceful Coexistence. There has been a pattern from 2010 where Detente always comes up with Arms race, and Sino-Soviet always comes up with Peaceful Coexistence. Detente and Arms race came up last year, so I am 90% sure it will be the alternate pair this year. Of course the source based question is always on the same two topics so no need to worry there.
...and how to stay positive