Bulgaria expelled two Russian diplomats who prosecutors suspect were involved in espionage and gave them 48 hours to leave the Balkan country, the foreign ministry said on Friday. Bulgaria, which traditionally keeps close links to Russia, expelled another diplomat over espionage allegations in October and declined to grant a visa to Russia’s incoming defense attache. In return this deportation, the Russian Federation also deported the First Undersecretary of the Bulgarian Embassy on the basis of reciprocity.