(LONDON) — U.K. Prime Minister Liz Truss announced her resignation on Thursday.

Truss, who only became prime minister on Sept. 6, will be the shortest serving prime minister in modern political history.

Her resignation follows weeks of political and economic crisis, after the government introduced a new “mini-budget” which was roundly criticized.

Truss says she was given a mandate to deliver change in the struggling British economy, a mandate she now feels she can’t deliver on.

Truss, who replaced ousted PM Boris Johnson, said she will remain prime minister until a new leader is chosen. And she has spoken with the King.

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