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Already-in-place dynamic zero covid strategy, the strict controls in place here in the territory. back to you. kristie lu stout in hong kong. laura? this week a major diplomatic test for vice president kamala harris. she will attend the munich security conference meeting with u.s. allies all in the hopes of deterring russia from invading ukraine. cnn s jasmine wright joins us from washington. jasmine, what exactly is the vice president s mission on this trip? reporter: the trip will be all about reaffirming the u.s. s commitment to nato, its partners and of course to ukraine. and it could not come at a more critical time. i could not emphasize that enough. we heard national security adviser jake sullivan saying we are well within a window of attack here. secretary of state antony blinken said it could come before the olympics sunday. it starts on friday. the vice president has a big task here, a very big diplomatic test as you said. ....