Source A: Speech by President Reagan, 1987 'Mr. Gorbachev, tear down this wall!' This famous challenge symbolized Reagan's firm stance against the Soviet Union and his desire to promote change in Eastern Europe.

Historian View: John Lewis Gaddis (2005): 'Reagan’s strategic policies, combined with his engagement with Gorbachev, played a crucial role in reducing Cold War tensions. His willingness to negotiate marked a shift from previous confrontational policies.'

Source B: The INF Treaty, 1987 The Intermediate-Range Nuclear Forces Treaty was a landmark arms reduction agreement between the USA and the USSR, symbolizing mutual trust.

Historian View: Mary Sarotte (2014): 'The INF Treaty marked a turning point, showing that both superpowers could agree to reduce their nuclear arsenals, which was crucial for ending Cold War hostilities.'

Historian View: Niall Ferguson (2006): 'Reagan's policies, combined with Gorbachev's leadership, accelerated the end of the Cold War, making him a pivotal figure in this history.'

Student Perspective: Reflect on whether Reagan's actions or Gorbachev's reforms were more responsible for ending the Cold War.