In the weeks leading up to the two-day event, the Turkish authorities blocked websites, jailed scores of people over allegations of terrorism and arrested a prominent comedian.
The C.D.C.’s tobacco control office has been shut for more than a year. After its most prominent antismoking campaign went off the air, calls to 1-800-QUIT-NOW lines have plummeted.
Ballistic missiles were fired into the capital of Ukraine as Russia launched its second major attack in less than a week. At least 12 people were killed, officials said.