US Warns of 'Imminent' Attack in Kabul

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credible – adj. able to be believed; reasonable to trust or believe

imminent – adj. happening very soon

facilities – n. something (such as a building or large piece of equipment) that is built for a specific purpose

vulnerable – adj. open to attack, harm or damage

secure – adj. protected from danger or harm; guarded so that no one can enter or leave without approval