The first contactless aid flights arrived in disaster-hit Tonga on Thursday, as the coronavirus-free Pacific island nation takes precautions to keep the virus out of its borders in the wake of a devastating volcanic eruption and tsunami.

• First images emerge of Tonga after eruption

• Video shows underwater eruption

Opinion: Enormous Tonga volcano eruption was once-in-a-millennium event

Once one of the world's most powerful travel documents, the might of the United States passport has been diminished during the pandemic. With US Covid-19 cases now past the 32.4 million mark, some nations continue to view vacationers warily even as more Americans get vaccinated.