A nuclear strike is an answer to a complex problem and it’s an investment the UK had to undertake to safeguard itself. This is the modern step a friendly yet pragmatic Union of four nations takes to safeguard itself in a multipolar world.
Yet the process is much more complex than the disagreements over its existence. The technicals involved mean it’s the most advanced system in the world. It doesn’t need to be complemented by any other type of technology. It stands alone as a highly intelligent piece of kit.