Minister Sigmar Gabriel was in Pristina today as part of his regional tour.
Opposition parties say Kosovo loses territory in the border agreement signed two years ago, and have blocked the governing coalition from ratifying the deal by continuously disrupting parliament.
US Senator John McCain also visited Kosovo today, urging Pristina to resume its dialogue with Serbia, saying that's the only way to a prosperous and safe future.
Gabriel, who was in Serbia a day earlier, advised Kosovo and Serbia to continue their talks and "first of all to avoid provocations; second, to accept the reality; third, to care about how to make life easier for the people. This has to be the focus of the negotiations."
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Kosovo declared independence from Serbia in 2008. It has been recognized by 114 countries but not by Serbia. Their relations have been especially tense since December following a series of provocations.
Gabriel and McCain also called on Kosovo's ethnic Albanian leaders to cooperate and convince the country's Serb minority to approve the creation of the country's armed forces.
"Kosovo, like all other sovereign states, has the right to form an army but it should not be used to raise the emotional tensions," said Gabriel.