sentences:  In 2008, with the establishment of the Serbian Progressive Party, Vučić said that the goal of a Greater Serbia taking Croatian territory up to the proposed Virovitica-Karlovac-Karlobag line "is unrealistic and silly".The Croatian newspaper Jutarnji list claimed in a reportage that none of his family members had been killed during World War II, upon which he replied that these were "brutal lies and attacks on his family".During 2015 and 2016, relations between Croatia and Serbia were further affected by to the ongoing migrant crisis, when Croatia decided to close its border with Serbia.