The two heads of government are discussing the need for greater freedom in Serbia, which wants to join the European Union.
After a string of diplomatic flubs in Europe, the Trump administration added a snub for equality.
Luxembourg's prime minister, Xavier Bettel, married Gauthier Destanay, making him the first European Union Leader to marry a same-sex partner.
Xavier Bettel is the world's only current head of government to be legally married to a same-sex spouse.
A Canadian news site says it has the scoop: Luxembourg's out prime minister will tie the knot next week.
The small, wealthy European nation joins Scotland and Florida in welcoming in the new year with marriage equality.
After five years of work toward marriage equality, Luxembourg has it.