The US strengthens security measures for the international flights to the United States.

As the VOA reported, the measures, would begin taking effect within three weeks, could require additional time to screen passengers and personal electronic devices for possible explosives.

Airlines that fail to satisfy new security requirements could still face in-cabin electronics restrictions.

European and U.S. officials told Reuters that airlines have 21 days to put in place increased explosive trace detection screening and have 120 days to comply with other security measures, including enhanced screening of airline passengers. 

The measures would affect 325,000 airline passengers on about 2,000 commercial flights arriving daily in the United States, on 180 airlines from 280 airports in 105 countries.