Answer:
The idea expressed by President Ronald Reagan in this excerpt is that it was communist nations that threatened world peace and not western democracy.
Step-by-step explanation:
The given excerpt is taken from President Ronald Reagan's speech delivered on June 8, 1982, delivered to members of the British Parliament at the Palace of Westminster, London. The speech is famously known as "the Evil Empire."
In this speech, President Ronald Reagan addressed to ongoing Cold War between the United States and the Soviet Union. He asserted that the war was not of a nuclear weapon but good and evil.
In this excerpt, he is expressing the notion that when people will look back to history, they will know that it was communist nations that threatened world peace and not western democracy. He remarked that if power would have been in the hands of the Soviet, communist nation, then the world would have been a different place.