Bronislaw Komorowski has been sworn-in as Poland's new president.
In a run-off election on 4 July, Mr Komorowski, 55, defeated Jaroslaw Kaczynski, the twin brother of the late President Lech Kaczynski, who was killed in a plane crash on 10 April in Russia.
In a gesture to Kaczynski supporters, he vowed to work for national unity.
However, the ABC reports Mr Kaczynski did not attend the ceremony.
The BBC reports Mr Komorowski said his first foreign visits would be to Brussels, Paris and Berlin in order to "show Poland's European roots".