Step 1: Understanding the Concept:
The historical use of the veto power reflects the ideological and geopolitical struggles within the UN Security Council since its inception in 1945.
Step 2: Detailed Explanation:
Statistically, the USSR (and later the Russian Federation) has cast the highest number of vetoes in the history of the United Nations.
During the early years of the Cold War, the USSR frequently used the veto to block Western-backed resolutions and membership applications.
The USA follows as the second most frequent user, often using its veto power in relation to resolutions concerning the Middle East conflict.
China, the UK, and France have used the veto significantly fewer times than the two superpowers.
Step 3: Final Answer:
Based on historical UN data records, the USSR/Russia is the correct answer. Option (B).