The ceremony took place amid heightened security after the assassination attempt on his close ally, populist Prime Minister Robert Fico, a month ago.
Pellegrini called for national unity in his speech at a special session of Parliament in Bratislava. He has become Slovakia’s sixth president since the country gained independence after the disintegration of Czechoslovakia in 1993.
“We are one nation, one society, one Slovakia,” he said.
The 48-year-old Pellegrini beat pro-Western career diplomat Ivan Korcok in the presidential runoff vote on April 6. His victory…