封锁

network blockade

economic blockade

be put under blockade

impose news blackout (on all the information/report about)

enforce a blockade; impose an embargo (against/on)

lift/raise a blockade/an embargo

break a blockade

black out the casualty reports of an earthquake

block the news/information

seal all the exits (from)

blockade a port/harbour

cordon/seal off the area

seal/block off roads

close the border