The paragraph from the New York Times reads...
Rarely has any world leader come full circle the way Mr. Modi has: Denied a United States visa for nearly a decade as punishment for his handling of religious riots that broke out in the state he then led, Mr. Modi flies into New York as an immensely popular leader and a sought-after strategic partner, viewed as uniquely capable of balancing the might of a rising China.
I wonder this indefinite article. What am I missing?