LONDON, Oct 20 (Reuters) - Liz Truss said on Thursday she would resign as British prime minister just six weeks after she was appointed.
A leadership election will be completed within the next week to replace Truss, who is the shortest serving prime minister in British history.
Wallace, a former soldier, was defence minister for both Johnson and Truss, leading Britain's response to Russia's invasion of Ukraine.
Boris JohnsonFormer prime minister Johnson, a journalist, has loomed large over British politics ever since he became London Mayor in 2008.
The Times reported that Johnson is expected to stand in the Conservative Party leadership contest.