BERLIN (Reuters) - The leader of the far-right Alternative for Germany (AfD), the second largest party in parliament after Sunday's election, said Germany's likely next chancellor would be held hostage by left-wing parties that would seek to loosen tough fiscal rules.

Germany faces its second change of leader in less than four years after the head of the center-right opposition won Sunday’s election.

Merz expressed concern over changing relations with Washington under the Trump administration, emphasizing the need for gradual independence from the U.S.

Wall Street struggled for traction on Monday, ending mixed after slumping last week, while German election results buoyed German shares and Europe's single currency as investors waited for midweek results from artificial intelligence chip leader Nvidia.

Friedrich Merz looks poised to form a coalition between his center-right alliance and the center-left Social Democrats, but Germany is facing political uncertainty with an emboldened far right. The

Exit polls show the center-right Christian Democratic Union party leading, with the AfD party heading towards the strongest showing of the far-right since World War II.

The euro nudged higher on Monday after Germany's opposition conservatives won the national election as expected, while the dollar trod water amid worries over the growth outlook for the U.S economy. Friedrich Merz was set to become Germany's next chancellor after his party emerged victorious in Sunday's election,