Marine Le Pen’s ultimatum to French Prime Minister Michel Barnier, even after he caved on a key demand from her party, lays bare the unprecedented clout the far-right leader now wields in Paris’ halls of power.

French Prime Minister Michel Barnier must make further budget concessions to avoid a no confidence motion that could topple his government, National Rally lawmaker Marine Le Pen said on Sunday. Le Pen has given Barnier until Monday to yield to budget demands from the National Rally (RN) or face the threat that they would back a likely no confidence motion against his government,

The end of Michel Barnier’s government looks inevitable, even imminent, and would add to the country’s political malaise. The only question seems to be: How long can he last?