TY JOUR TI Fragmentation of the global financial system as a factor in the transformation of the global economic system KW fragmentation KW global financial system KW global economy KW de-dollarization KW regional blocs KW sanctions policy KW financial architecture KW currency settlements KW geoeconomics KW normative stratification JO JOURNAL OF MONETARY ECONOMICS AND MANAGEMENT AU Loktionov, Z.I. PY 2025 IS 0 PB ITBO University