Why are the Swaps of the Prisoners in the US may take many years of negotiations

Another American, which took place in Russia, was released as part of the negotiations to release it and two others from Belarus, the White House reports. This happens after the release of American teacher Mark Fogel, who affected the United States after being in a Russian prison for almost four years for storage of marijuana. These negotiations are a diplomatic sewer, which may often take years of conversations on the return channel. Roger Carstens, the main negotiator of President Biden's hostage, joins the explanation.