US President Donald Trump is reportedly growing more frustrated with Iran as nuclear negotiations continue to drag on, reports in US media suggest.

Citing sources, the reports said Trump’s advisers are increasingly discussing the possibility of returning to a more forceful military stance.

According to people close to the talks, Trump’s frustration is partly driven by the ongoing blockade of the Strait of Hormuz and what he sees as internal divisions within Iran’s leadership.

According to the reports, the US president believes these internal struggles are keeping Iran from making the significant concessions needed to move the talks forward, leaving diplomatic efforts at risk of stalling.