Polish President Lech Kaczynski has sworn in a new prime minister and 18 Cabinet members.

Donald Tusk takes over as prime minister from the president's twin brother, Jaroslaw Kaczynski, who stepped down as prime minister earlier this month. Mr. Tusk's new center-right government promises to improve ties with the European Union, Germany, and Russia, which were strained under the previous government.

Mr. Tusk's Civic Platform party beat the Kaczynskis' Law and Justice party in October 21 elections, and is forming a government with the centrist Polish Peasants' Party.

Mr. Tusk promises to push through economic reforms. He also wants to pull Poland's 900 troops out of Iraq and says he will be a tough negotiator on the U.S. plan for a missile defense system in Poland.

However, Mr. Tusk will have to work with President Kaczynski who still has foreign policy power and opposes the nomination of Radek Sikorski as foreign minister.

The leader of the Polish Peasants' Party and former prime minister, Waldemar Pawlak becomes deputy prime minister.

There are five women in the new Cabinet.

Some information for this report was provided by AFP, AP and Reuters.