proof of the cause in 2018, nbc news reported u.s. intelligence officials suspected russia russia denies it but mark polymeropoulos told me he had to quit the cia because of symptoms that started in moscow. i couldn t stand up i was falling over i had incredible sense of nausea and ringing in my ears i was, frankly, terrified. reporter: we sat down exclusively with cuban investigators in 2017 who denied blame. translator: cuba doesn t possess this technology cuba has never produced these times types of weapons reporter: while searching for the cause, the biden administration is working on devices to protect personnel as it is considering sending diplomats back to havana for the first time since the attacks started. lester thank you we told you last night about a shortage of cars. well, furniture is hard to come by these days, too. kristen dahlgren explains in the price you pay for a shortage of material reporter: brina furman is shopping for an ottoman, but she may not