Dhaka, Feb. 25 -- The international system is in upheaval with human rights being "suffocated," the United Nations said on Monday, warning that an era of "dictators" could return.During an opening address at the UN Human Rights Council's main annual session, UN rights chief Volker Turk painted a dark picture of a "very dangerous" situation in a world increasingly dominated by authoritarians.He did not mention any country - even as the world grapples with the Russia-Ukraine war, dramatic changes in the United States and a more assertive China.It was clear, he said though, that "the international system is going through a tectonic shift"."The human rights edifice we have built up so painstakingly over decades has never been under so much st...