Friedrich Merz, on course to become post-World War II Germany's 10th chancellor after the country's election, has vowed to prioritize European unity and the continent's security as it grapples with the new Trump administration and Russia's war on Ukraine.

U.S. President Donald Trump hailed Sunday as a "great day for Germany" after an election in which the centre-right opposition won first place followed by the far-right AfD with its strongest result ever.

With Germany's election results in, Friedrich Merz emerges as a key figure who has promised to reshape Europe-US relations