ZAGREB, CROATIA - FEBRUARY 12: Serbian President Aleksandar Vucic (front) is welcomed by Croatian President Kolinda Grabar Kitarovic (R) at Presidency building with an official ceremony during his visit in Zagreb, Croatia on February 12, 2018. Samir Yordamovic / Anadolu Agency

ZAGREB, CROATIA - FEBRUARY 12: Serbian President Aleksandar Vucic (front) is welcomed by Croatian President Kolinda Grabar Kitarovic (R) at Presidency building with an official ceremony during his visit in Zagreb, Croatia on February 12, 2018. Samir Yordamovic / Anadolu Agency

ZAGREB, CROATIA - FEBRUARY 12: Serbian President Aleksandar Vucic (L) is welcomed by Croatian President Kolinda Grabar Kitarovic (R) at Presidency building with an official ceremony during his visit in Zagreb, Croatia on February 12, 2018. Samir Yordamovic / Anadolu Agency

ZAGREB, CROATIA - FEBRUARY 12: Serbian President Aleksandar Vucic (R) is welcomed by Croatian President Kolinda Grabar Kitarovic (2 R) at Presidency building with an official ceremony during his visit in Zagreb, Croatia on February 12, 2018. Samir Yordamovic / Anadolu Agency

ZAGREB, CROATIA - FEBRUARY 12: Serbian President Aleksandar Vucic (front L) is welcomed by Croatian President Kolinda Grabar Kitarovic (front R) at Presidency building with an official ceremony during his visit in Zagreb, Croatia on February 12, 2018. Samir Yordamovic / Anadolu Agency

ZAGREB, CROATIA - FEBRUARY 12: Serbian President Aleksandar Vucic (front L) and Croatian President Kolinda Grabar Kitarovic (front R) walk past honor guards during an official welcoming ceremony at Presidency building in Zagreb, Croatia on February 12, 2018. Samir Yordamovic / Anadolu Agency

ZAGREB, CROATIA - FEBRUARY 12: Serbian President Aleksandar Vucic (front L) and Croatian President Kolinda Grabar Kitarovic (front R) walk past honor guards during an official welcoming ceremony at Presidency building in Zagreb, Croatia on February 12, 2018. Samir Yordamovic / Anadolu Agency

ZAGREB, CROATIA - FEBRUARY 12: Serbian President Aleksandar Vucic (front L) and Croatian President Kolinda Grabar Kitarovic (front R) walk past honor guards during an official welcoming ceremony at Presidency building in Zagreb, Croatia on February 12, 2018. Samir Yordamovic / Anadolu Agency

ZAGREB, CROATIA - FEBRUARY 12: Serbian President Aleksandar Vucic (2 R) and Croatian President Kolinda Grabar Kitarovic (R) walk past honor guards during an official welcoming ceremony at Presidency building in Zagreb, Croatia on February 12, 2018. Samir Yordamovic / Anadolu Agency

ZAGREB, CROATIA - FEBRUARY 12: Serbian President Aleksandar Vucic (front L) and Croatian President Kolinda Grabar Kitarovic (front R) walk past honor guards during an official welcoming ceremony at Presidency building in Zagreb, Croatia on February 12, 2018. Samir Yordamovic / Anadolu Agency

ZAGREB, CROATIA - FEBRUARY 12: Serbian President Aleksandar Vucic (L) is welcomed by Croatian President Kolinda Grabar Kitarovic (2 L) at Presidency building with an official ceremony during his visit in Zagreb, Croatia on February 12, 2018. Samir Yordamovic / Anadolu Agency

ZAGREB, CROATIA - FEBRUARY 12: Serbian President Aleksandar Vucic (L) is welcomed by Croatian President Kolinda Grabar Kitarovic (R) at Presidency building with an official ceremony during his visit in Zagreb, Croatia on February 12, 2018. Samir Yordamovic / Anadolu Agency

ZAGREB, CROATIA - FEBRUARY 12: Serbian President Aleksandar Vucic (L) is welcomed by Croatian President Kolinda Grabar Kitarovic (R) at Presidency building with an official ceremony during his visit in Zagreb, Croatia on February 12, 2018. Samir Yordamovic / Anadolu Agency

ZAGREB, CROATIA - FEBRUARY 12: Serbian President Aleksandar Vucic (L) is welcomed by Croatian President Kolinda Grabar Kitarovic (R) at Presidency building with an official ceremony during his visit in Zagreb, Croatia on February 12, 2018. Samir Yordamovic / Anadolu Agency

ZAGREB, CROATIA - FEBRUARY 12: Serbian President Aleksandar Vucic (L) meets with Croatian President Kolinda Grabar Kitarovic (R) at Presidency building during his official visit in Zagreb, Croatia on February 12, 2018. Samir Yordamovic / Anadolu Agency

ZAGREB, CROATIA - FEBRUARY 12: Serbian President Aleksandar Vucic (L) meets with Croatian President Kolinda Grabar Kitarovic (R) at Presidency building during his official visit in Zagreb, Croatia on February 12, 2018. Samir Yordamovic / Anadolu Agency

ZAGREB, CROATIA - FEBRUARY 12: Serbian President Aleksandar Vucic (L) meets with Croatian President Kolinda Grabar Kitarovic (R) at Presidency building during his official visit in Zagreb, Croatia on February 12, 2018. Samir Yordamovic / Anadolu Agency