This paper explores the path of the impact and consequences of financial sanctions on the financial security of target countries by studying the mechanisms for the sanctions to exert impact on the core export industries,banking,and sovereign organizations on basis of an analysis of the sanctions measures.The performance of Russia's macroeconomy and financial markets is analyzed when sanctions imposed substantial challenges on Russia's national financial security as they triggered capital flight,sharp fluctuation in interest rate,exchange rate as well as stock prices,and hence undermine its economic growth,price stability,and fiscal revenue and expenditure.In response to financial sanctions,target countries are advised to predict the probable steps of the sanctions so as to soften the crippling impact,stop secondary sanctions,and reduce the threat of the sanctions on their financial security to the minimalist level.