A U.N. conference on nuclear nonproliferation scheduled for next month is expected to be postponed again amid the surge of the Omicron variant of the novel coronavirus, diplomatic sources said Tuesday.The gathering to review the Treaty on the Non-Proliferation of Nuclear Weapons was scheduled to be held Jan. 4 to 28 in New York after repeated postponements from its original date in 2020 due to the pandemic.The United States and some European countries have seen a sharp rise in COVID-19 cases with the advent of the Omicron variant, prompting authorities to bring back some restrictions at ind…READ FULL ARTICLE