To them, people of your kind (very believing and panicky) are the exact target audience of their crappy bluff.
Those 3rd world dictators often insist they are stronger than they really are.
As well as more than they can really do.
And their words of intimidation are often the appeal to own population, rather than to the hostile power.
As that kind of Make Believe is often the most effective tool to control own people(presenting themselves as the strong dependable leaders not bending knees on the external pressure).
How many times N/Korea said they would strike Guam or US mainland or bomb Japan with their 'Latest Missiles'?
Same to Poo-tin's Nuke Threat from the early stage of Invasion Ukraine.
Did they ever do what they said they would do?
Can you imagine Why Not?
Simply because they won't be any benefited by doing so.
Saying is One Thing. Doing is Another.
Who wants to buy One Way Ticket to Own Doom unless they are really insane?
interestingly, they are all close allies each other.
If you have some knowledge of international politics, you can easily get off much of your needless over concern related to the international topics.