The Ukrainian President Petro Poroshenko has said he agrees with the German Chancellor that there’s no alternative to the Minsk ceasefire agreement.<br /><br /> At a joint news conference in Berlin during Poroshenko’s official visit to Germany, the president again said Russian-backed separatists were flouting the accord.<br /><br /> Merkel said no decision on whether to extend EU sanctions against Russia would be taken before June.<br /><br /> Poroshenko hoped this week’s summit in Brussels would make it clear more measures would follow if the Minsk agreement was not fully implemented.<br /><br /> The president, who earlier called for more non-lethal military aid, thanked Germany for its pledge of 500 million euros to help Ukraine’s economic reforms.