Sanctions will remain in place until Putler is delivered to The Hague
The sanctions will be there forever, or at least until we come crawling back on all fours - begging for forgiveness.
The US imposed a total embargo on Cuba in 1958. According to Wiki: "The United Nations General Assembly has passed a resolution every year since 1992 demanding the end of the US economic embargo on Cuba, with the US and Israel being the only nations to consistently vote against the resolutions."
60+ years, and the Americans are still trying to suffocate the Cubans into submission. Same story with the North Koreans and Iran.
Another example is the Jackson-Vanik Amendment, which was passed by Congress in 1974. These were in essence economic sanctions, intended to force the Soviet Union to allow its Jews to emigrate.
The Soviet Union fell apart, nearly all the Jews emigrated, and Russia became a market economy. Guess what, it took until 2012 for it to be repealed against Russia - but also, only to be replaced with the Magnitsky Act. The law itself is formally called, "The Russia and Moldova Jackson-Vanik Repeal and Sergei Magnitsky Rule of Law Accountability Act of 2012".
Basically they took a couple unnecessary decades to repeal the sanctions, and then replaced them with new ones on literally the same day they repealed the old ones.
This is why nobody takes US sanctions seriously. The US is simply not an honest broker. Iran tried to play the game, and was swiftly punished for it by Trump.
If America sanctions you, it's better to immediately start making preparations for how to live life under these sanctions, than to engage in any kind of back and forth with the States. They don't mean what they say, and they change their mind constantly.