The six-nation Contact Group on Kosovo, lead by former Finish President Martti Ahtisaari, is now engaged in discussions about the future status of Kosovo. If the Contact Group's current guidelines are followed, Kosovo may become an independent country with no formal partitions. Under those circumstances, the treatment of the Serb minority in Kosovo (which currently makes up about 5-7 percent of the population) will be a critical issue in the negotiations. The largest concentration of those Serbs is north of the Ibar River, in and around the city of Mitrovica.