The American Institute in Taiwan (AIT) has initiated a promotional series titled “WHA Countdown” on Facebook to express its support for Taiwan’s participation in the upcoming World Health Assembly (WHA). "The U.S. firmly believes Taiwan has a role to play in global health and should be invited to observe the World Health Assembly (WHA) later this month," the AIT, the U.S. de facto embassy in Taiwan, said on its Facebook page on Friday.