Unsettling bot problem could create an explosive situation (6,4)

I believe the answer is:

petrol bomb

I'm a little stuck... Click here to teach me more about this clue!

'an explosive situation' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.

'unsettling bot problem' is the wordplay.
'unsettling' indicates an anagram.
'bot'+'problem'='botproblem'
'botproblem' anagrammed gives 'PETROL BOMB'.

'could create' is the link.

Can you help me to learn more?

(Other definitions for petrol bomb that I've seen before include "Explosive device using motoring fuel" , "Crude incendiary device" .)

I've seen this clue in The Irish Times.

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