The week in pictures, Oct. 13-19

A flock of seagulls flies over Lower Manhattan and One World Trade Center at sunset in New York City, Oct. 17, 2018. (Gary Hershorn/FOX News)

A group of children watches a polar bear at the zoo in Gelsenkirchen, Germany, Oct. 16, 2018.  (AP Photo/Martin Meissner)

Sailboats take part in the 50th edition of the traditional "Barcelona" regatta in the Gulf of Trieste, north-eastern Italy, Oct. 14, 2018.  (AP Photo/Paolo Giovannini)

Competitors wait for the start of the swimming race at the Ironman Triathlon World Championship in Kailua Kona, Hawaii, Oct. 13, 2018. (AP Photo/Marco Garcia)

A depiction of a cannabis bud drops from the ceiling at a countdown party marking the first day of the legalization of cannabis across Canada in Toronto, Oct. 17, 2018. (Chris Young/The Canadian Press via AP)

People collect pumpkins in a field on the outskirts of Frankfurt, Germany, Oct. 18, 2018.  (AP Photo/Michael Probst)

Britain's Prince Harry and Meghan, Duchess of Sussex meet with a local surfing community group, known as OneWave, at Bondi Beach in Sydney, Australia, Oct. 19, 2018.   (Dominic Lipinski/Pool via AP)

President Donald Trump arrives as the sun sets to speak at a campaign rally at Minuteman Aviation Hangar, in Missoula, Montana, Oct. 18, 2018. (AP Photo/Carolyn Kaster)

Los Angeles Dodgers' Manny Machado celebrates after scoring on a Cody Bellinger walk-off hit during the 13th inning of Game 4 of the National League Championship Series baseball game against the Milwaukee Brewers in Los Angeles, Oct. 16, 2018. (AP Photo/Matt Slocum)

China's Yingsha Sun watches the ball during the Table Tennis International Team Event Gold Medal match against Japan at the Youth Olympic Games in Buenos Aires, Argentina, Oct. 15, 2018.  (Simon Bruty/OIS/IOC via AP)

People gather around a train that derailed near Sidi Bouknadel, Morocco, Oct. 16, 2018. (AP Photo/Abdeljalil Bounhar)

A man walks through a beachfront neighborhood that was decimated by Hurricane Michael in Mexico Beach, Florida, Oct. 16, 2018. (Scott Olson/Getty Images)

The Llano River flows between the washed out Ranch Road 2900 bridge in Kingsland, Texas, Oct. 16, 2018. (Jay Janner/Austin American-Statesman via AP)

Pope Francis talks with nuns after the weekly general audience in Saint Peter's Square at the Vatican, Oct. 17, 2018.  (REUTERS/Tony Gentile)

Britain's Prince Harry, Australia's Prime Minister Scott Morrison, and Invictus Games representatives climb the Sydney Harbour Bridge in Sydney, Oct. 19, 2018.  (AP Photo/Steve Christo)

A Chelsea Pensioner, in his ceremonial uniform as a retired member of the British army poses with 6 foot 'Tommy' figures at the Royal Hospital Chelsea in London, Oct. 16, 2018.  (AP Photo/Matt Dunham)

A polar bear dives in the water at its enclosure at the zoo in Gelsenkirchen, Germany, Oct. 16, 2018.  (AP Photo/Martin Meissner)

The Boston Red Sox pose for a picture after winning the American League Championship Series against the Houston Astros in Houston, Oct. 18, 2018. (AP Photo/Frank Franklin II)