More than 160 people in South Carolina are under quarantine as the state battles a growing number of measles cases. Dr. William Schaffner, professor of infectious disease at Vanderbilt Medical Center, joins CBS News to discuss.
President Trump is calling for a total and complete blockade on all sanctioned oil tankers that enter or leave Venezuela. CBS News White House reporter Aaron Navarro has more.
Ukrainian President Volodymyr Zelenskyy said he discussed "substantive details" of a Ukraine-Russia peace deal with President Trump's envoys Steve Witkoff and Jared Kushner on Christmas.
