Jamal Khashoggi’s fiancee has said Mohammed bin Salman must be “punished without delay” after the publication of a US intelligence assessment found the Saudi crown prince approved of the journalist’s killing. “The truth – that was already known – has been revealed one more time, and is now confirmed,” said Hatice Cengiz, a Turkish researcher who was engaged to marry Khashoggi, in a statement on Monday. “Yet this is not enough, since the truth can only be meaningful when it serves justice being achieved.” The US government on Friday released a four-page report confirming it viewed the Saudi future king as personally involved in the murder of one of his most prominent critics. But Washington stopped short of targeting the future Saudi king with financial or other sanctions. Cengiz called on the Joe Biden administration to punish Prince Mohammed, 35, in order to seek justice for Khashoggi and “prevent similar acts recurring in the future”. She said: “Starting with the Biden administration, it is vital for all world leaders to ask themselves if they are prepared to shake hands with a person whose culpability for murder has been proven, but not yet punished.” The White House spokeswoman, Jen Psaki, said on Monday: “We reserve the right to take any action at a time and manner of our choosing.” But she added the US “has not typically sanctioned government leaders of countries where we have diplomatic relations”. Psaki said that the measures taken against Saudi Arabia were “determined by our national security team to have the intended impact of preventing this from ever happening again”. “We’ve also conveyed very clearly and candidly, through diplomatic channels, that this absolutely can never happen again, that our relationship will be different from what it has been in the past,” she added. A further announcement, reshaping US policy on Saudi Arabia and humanitarian aid to Yemen was expected from the state department later on Monday, but it will include no measures targeting the crown prince. Biden has said the changes would be significant and make clear that “the rules are changing”. “We are going to hold them accountable for human rights abuses,” Biden told Univision, saying he had warned King Salman about the announcement in a phone conversation on Friday. The Biden administration has already announced an end to US support to the Saudi-led military campaign in Yemen, a move that is likely to bring more scrutiny of UK arms supplies to the kingdom. Agnes Callamard, the UN special rapporteur on summary executions, who led an investigation into Khashoggi’s murder, said the details that had been declassified by the US “appears to be very little indeed and that’s disappointing”. “It is extremely problematic, in my view, if not dangerous, to acknowledge someone’s culpability and then to tell that someone ‘but we won’t do anything, please proceed as if have we have said nothing’,” Callamard told a press conference in Geneva. “That to me is an extremely dangerous move on the part of the USA.” The intelligence assessment’s release was accompanied by the unveiling of a new “Khashoggi rule” which is set to impose visa sanctions on individuals who, acting on behalf of a foreign government, engage in “counter-dissident” activities, including harassment, surveillance, and threats against journalists, activists, and dissidents. Along with the publication on Friday of a partially redacted version of the US intelligence assessment on the October 2018 Khashoggi murder, the Biden administration said it was imposing visa restrictions on 76 Saudis involved in the killing and in the intimidation of Saudi critics in the US. Psaki’s remarks on Sunday appeared to rule out including Prince Mohammed on that list. The Biden administration announced an end to US military support for the Saudi-led war in Yemen, but will continue to supply the kingdom with defensive weapons. It is not yet clear how it will define offensive and defensive weapons and what arms sales will be stopped.