Pelosi arrives in Malaysia as concerns about a potential trip to Taiwan grow.
House Speaker Nancy Pelosi visits Taiwan
The highest-ranking elected representative from the United States to visit Taipei
Taipei in more than 25 years will be the speaker of the U.S. House when he arrives on Tuesday night.
It flew far within Taiwan's Air Defense Identification Zone
, China is increasing the size of its nuclear arsenal
The UAV might have crossed the Bashi Channel and flown back to China.