The union currently has five members – Russia, Belarus, Kazakhstan, Armenia and Kyrgyzstan.
“The issue of joint actions in response to the West’s restrictive measures against Russia is not on the agenda at present, though the legislative base of the Customs Union allows it,” Vasily Nebenzya said.
In March, following Russia's reunification deal with Crimea, the United States, the European Union and a number of their allies introduced a package of sanctions against Russia. They included asset freezes and visa restrictions on some individuals and envisaged scrapping business contacts with Russia.
Russia repeatedly denied the accusations, stressing that sanctions are counterproductive and warned of a possible boomerang effect on the countries that imposed them.
In August, Russia responded by introducing a year-long ban on food imports from the countries that had sanctioned it.
In mid-December, the United States, European Union and Canada introduced a new round of sanctions targeting Russia and specifically Crimea. Speaking about the move last week, Kremlin aide Yuri Ushakov told journalists that Russia was considering its response, but did not provide any details.
