TY JOUR TI PRIORITY DIRECTIONS FOR ENSURING FOOD SECURITY OF RUSSIA, TAKING INTO ACCOUNT THE ANALYSIS OF THE STRONG AND WEAKNESSES OF COUNTRY ECONOMY KW food security KW opportunities KW threats KW competitive advantages JO Vestnik of Kazan State Agrarian University AU Kirillova, O.V. PY 2019 IS 14 PB Kazan state agrarian University