Energy minister Miatta Fahnbulleh was asked by Wilf Frost if MPs would get a vote on any potential military action against Iran if it were to take place.
Fahnbulleh says she can't comment on operational matters.
She adds that "candidly", such decisions are above her pay grade.
The MP adds: "That is for the prime minister."
She adds that the prime minister and foreign secretary are "monitoring the situation and calibrating our response".
Legal advice won't be disclosed
Sky News US correspondent Mark Stone earlier reported that the UK's attorney general, Richard Hermer, had concerns over the Israel-Iran conflict.
Fahnbulleh says that legal advice provided to the prime minister is "not something we... disclose publicly".
She adds that the priority of the government is to "keep a cool, calm head" and try to de-escalate the situation.
Asked about the possibility of UK bases in Cyprus or the Indian Ocean assisting potential US strikes on Iran, the minister says Starmer is in regular contact with Donald Trump and the US.
She says again that "candidly", she is not across such details.
Fanhbulleh adds that no minister would comment on operational matters as it is "far too important" and "far too sensitive" for them to do so.