Russian President Vladimir Putin will meet with his Serbian counterpart Tomislav Nikolic in the Russian Black Sea resort of Sochi on Friday, the Kremlin reported. Nikolic will pay a working visit to Russia on Putin’s invitation. The Kremlin said in a statement carried by Russian RIA Novosti news agency today that the heads of state are set to sign a declaration on strategic partnership that will define the key directions for the development of bilateral ties. Russia-Serbia trade in 2012 totaled $1.7 billion. The countries also cooperate in the energy sphere, tourism, metallurgy and other areas.