The sanctions do not work.
There are various estimates of losses because of sanctions imposed on Russia: both what the countries that imposed sanctions have lost and what Russia itself has lost. In April 2017, for example, while being in Moscow, Idriss Jazairy, the first OHCHR Special Rapporteur on the negative impact of the unilateral coercive measures on the enjoyment of human rights, announced that Russia had lost US $ 52-55 billion or about 1% of GDP because of the sanctions imposed in response to the annexation of Crimea. At the end of 2014, Anton Siluanov, Russia's finance minister, reported that Russia was losing US $ 40 billion a year because of the sanctions or 2% of its GDP. In January 2016, Alexei Likhachev, Deputy Minister of Economic Development of Russia, estimated losses as € 25 billion for 2015. Other Russian experts estimated Russia's GDP losses for 2014-2017 as 6% of GDP (see Russian sources in Russian: https://www.rbc.ru/economics/28/04/2017/590332b69a7947ae385244b0 ).