Poland's new Prime Minister Donald Tusk is sworn in, completing the transition of power

The new Polish Prime Minister Donald Tusk and his Cabinet were sworn in by the president on Wednesday morning, in a ceremony which marked the end of eight tumultuous years of rule by a national conservative party, Law and Justice. The swearing-in ceremony of the pro-European Union government, the final step in a transition of power, took place in the presidential palace in Warsaw. Tusk was returning to the job after a nine-year spell in opposition.