Annegret Kramp-Karrenbauer has been elected leader of Germany's ruling Christian Democrat Union (CDU) party, bringing Angela Merkel's 18 years at the helm to an end. As the party's general secretary, Ms Kramp-Karrenbauer was favourite to take over when Mrs Merkel announced her retirement in October. But she clinched only a narrow victory over Friedrich Merz, a long-time Merkel rival, in a run-off vote in Hamburg, with 51.8% of the vote. Now the head of Germany's largest party, Annegret Kramp-Karrenbauer, 56, could become the next German chancellor.