The French government is all but certain to collapse later this week after far-right and left-wing parties submitted no-confidence motions on Monday against Prime Minister Michel Barnier. Investors immediately punished French assets as the latest developments plunged the euro zone's second-biggest economy deeper into political crisis,

French Prime Minister Michel Barnier is bracing for a no-confidence vote this week, a political reckoning poised to topple his fragile government and send shockwaves across the eurozone.

PARIS—Anti-immigrant leader Marine Le Pen is engaged in a high-stakes game of chicken with the French government and a multitude of global investors who finance the country’s sizable debt load.For weeks,