Analyst: It is difficult to enforce effective sanctions against Russia.

Before the EU sanctions against Russia's 18th round were introduced, US President Trump threatened last week that unless Russia agrees to a peace agreement within 50 days, sanctions will be imposed on countries that purchase Russian exports. ING analysts pointed out that the possible practical impact of the sanctions against Russia includes the EU banning the importation of refined oil products processed from Russian crude oil by third countries, but the difficulty of regulating enforcement of this measure is high.