On Wednesday, several balloons carrying radar reflectors were shot down, Ukrainian officials told the UK.
A weekly selection of opinions and analyses from the Arab media around the world.
Taiwan's defense and foreign ministries did not immediately respond to a request for comment, and neither did the Pentagon.
This drone stands out because it was conducting surveillance. Is Iran thinking that it can send “objects” over US bases and outposts like China did with a balloon?
Israeli psychic and UFO expert Uri Geller has long claimed that aliens visiting Earth are coming in peace and said a few different civilizations are visiting.
UK UFO expert Nick Pope explained that the recent UFO sightings following the Chinese spy balloon debacle make this an "exciting time" for alien hunters.
Trudeau's comments came after US Senate Majority Leader told broadcasters that the objects destroyed over Canada and the US were both balloons.
Pentagon spokesperson Brigadier General Patrick Ryder said Washington was aware of the four past flights before it detected the latest Chinese balloon.
Biden said the incident would not harm China-US relationships.
Washington said the balloon was controlled by the Chinese military, the People's Liberation Army.