Polish President Lech Kaczynski will sign the Lisbon Treaty on Sunday afternoon after returning from Rome, a top aide of the president said on Thursday, Xinhua reported.
   "The president always keeps his word. He announced many a time that if Ireland supported the Lisbon Treaty in the second referendum, his decision would be positive and would end the ratification process," head of the National Security Bureau BBN Aleksander Szczyglo told local TVN24.
   President Kaczynski's twin brother Jaroslaw, however, has denied that the president will sign the treaty on Sunday, as announced earlier.
   "According to what I know, and I have knowledge of this, this won't happen on Sunday," Jaroslaw told a news conference on Thursday.
   The twins are political allies, and Jaroslaw heads the main opposition party, Law and Justice (PiS).
   After Ireland said "yes" to the Lisbon Treaty last Friday, the treaty ratification acts lack only the signatures of Polish and Czech presidents.
   The Lisbon Treaty, signed in December 2007, was designed to boost the EU's global standing through reforming its institutions. The treaty will take effect only after all 27 EU members ratify it.