Discuss the impact of two Cold War crises, each from a different region, on the development of superpower tensions.

The question requires that candidates offer a considered and balanced review of the impact of two Cold War crises upon the development of superpower tensions. The two crises must be from different regions but they may or may not have been occurred at the same time. A comparative approach may or may not be used. Candidates may refer to a range of factors including increasing tensions (perhaps even to the point of risking nuclear war), an easing of tensions and/or the geographical expansion of the Cold War. While other relevant factors, for example ideology, may be referred to, the bulk of the response will remain on the issue raised in the question.