Aleksandar Vucic has been sworn in as Serbia's new president, promising to work for peace and stability in the war-weary Balkans while strengthening the country's armed forces.
Vucic formally stepped down from his prime minister's post on Wednesday and took over his new role after his landslide win in April's election.
The opposition alleged irregularities during the election campaign, including muzzling the media, both state-owned and private.
There have been enough burials in the Balkans. It is time to give birth," Vucic said in his inaugural speech, referring to the wars in the southern European region in the 1990s in which he took an active role as a supporter of expanding Serbia's borders at the expense of its neighbours.
"While we have to talk to everyone, we also have to strengthen our defence capacity."
He added that Serbia would not join NATO or become "member of any other military alliance".