Poland's police have received information about a possible plot to attack Prime Minister Donald Tusk and Defense Minister Władysław Kosiniak-Kamysz. Security services, police, and Interior Ministry representatives were scheduled to hold an emergency meeting Sunday to discuss the situation. In September, Tusk warned about likely intensified hybrid attacks by Russia on NATO’s eastern flank. No more information about the reported plot was immediately available. Polish authorities were on high alert this week after three school attacks within four days in Mazovia province, where Warsaw is located.