Presidents and prime ministers have mostly ignored human rights violations committed by Saudi Arabia - including the deliberate killing of a journalist - since the rise of Crown Prince Mohammed bin Salman to power in 2017, but one woman has shown determination to confront the kingdom.
The UN rapporteur for extrajudicial killings, Anis Calamar, opened a new front with Saudi Arabia last week, when she and her colleague David Kay submitted detailed allegations about how Muhammad bin Salman, the owner of the Washington Post and Amazon boss Jeff Bezos, had been hacked through WhatsApp.
Bezos' news dominated the conversation in Davos and in the Silicon Valley, and a wave of speculation erupted over who the emir also sent them on WhatsApp.
Last year, a damning investigation by Kalamar into the murder of journalist Jamal Khashoggi revealed terrible details about his last moments, even describing the sound of plastic sheeting in his killing, and the last words that Khashoggi uttered. Kalamar concluded that it was a "state-sponsored killing."
French Calamar says she has faced death threats because of her work, including one personally threatened by Philippine President Rodrigo Duterte who has said he will slap her if she pursues an investigation into thousands of extrajudicial killings in connection with his drug war.
In her work with Amnesty International and other campaigning organizations before becoming the UN Special Rapporteur, she has worked on migration, refugee exodus, attacks on the press and conflict situations.
"The Kalamar is effective because it understands that human rights work is a work that must be mastered, unlike the people who make noise on Twitter," the Guardian in Washington quotes Stephanie Kirchgasner, quoting the son of the murdered Maltese journalist Daphne Karuana Galicia, as saying.
"Don't attack. She does work to document what actually happened, and then, there is an impulse to account," Matthew adds.
And he continued, "I really admire what she does. A single woman who is held accountable by those who are not accountable, has no budget, no office, and nothing. And look how Saudi Arabia fears her."
Kalamar and three other UN special rapporteurs were the first officials to call for an independent public investigation into the killing of Daphne Karuana Galizia, with within days of her murder stressing the importance of ensuring the independence of the investigating judge.
Over the past few days, Kalamar told the Guardian newspaper that her desire to unveil allegations of a Bezos phone penetration reflected a determination to highlight who might be "of strategic importance" to Saudi Arabia.
When asked by the same newspaper about the reason for its design, Calamar referred to the story of her grandfather Leon Savio, a member of the French Resistance.
Savio had joined the fight in World War I at the age of seventeen, and suffered from exposure to the toxic gas that plagued him for the rest of his short life. He was executed by the Nazis on August 15, 1944, days before the liberation of Paris.
"On August 15 of every year, my family participates in a memorial celebration of resistance members who died for their country. It was an important moment for me when I was a child," Kalamar says.
Her mother was an orphan at the age of one, but she became a school teacher who fought for social justice.
In response to a question about how she deals with what she describes as the "tingling" feeling that she sometimes feels at the back of her head due to her dangerous work, Calamar refers to some practical advice, saying that she is living a healthy lifestyle, exercising, exercising strength, mutual love and kindness, and not allowing fear to Discourage her from what you do.
The UN investigator adds that it is important to remember the people you work for: Jamal Khashoggi and many Saudis who live in exile, who are in prison on charges of expressing opinion such as Lujain al-Hathloul, and the brave protesters in Iran, Iraq and Lebanon.