nuclear warhead

He argued that "stopping Russia now" was cheaper than "wondering who will be the first to create a simple drone carrying a nuclear warhead".

The files said one incident, in August 2019, resulted in the release of "unnecessary radioactive waste" in the form of low levels of tritium, which is used in nuclear warheads.

Israel is the only country in the Middle East with nuclear warheads.

And unlike Iran, North Korea is believed to already have 40 to 50 nuclear warheads, making large-scale retaliation a very real possibility.

There are estimates that it has about 90 nuclear warheads.