In 1994, during a NATO training course in Budapest, a soldier named Ramil Safarov from one of these two countries killed a soldier (Gurgen Margaryan) from the other country. He was sentenced by Hungary. However, in August 2012, he was extradited back to his home country after that country promised to continue his sentence, much to the protests of Margaryan's country. But, in a provocative gesture, Safarov was not only pardoned, but promoted and feted in his home nation.
The other country has now broken off all diplomatic relations with Hungary. Which are these two countries?
This day last year: Q.340