London: A UK minister came out strongly in defence of his party leader Rishi Sunak on Sunday as the increasingly beleaguered prime minister attempts to ride out infighting within the ranks, with sections to the right of the governing Conservative Party calling for a leadership change ahead of a general election expected later in the year.London: A UK minister came out strongly in defence of his party leader Rishi Sunak on Sunday as the increasingly beleaguered prime minister attempts to ride out infighting within the ranks, with sections to the right of the governing Conservative Party calling for a leadership change ahead of a general election expected later in the year.