
WATCH: 20 dead after bombing in Philippine cathedral during Sunday Mass






Now Playing: World leaders arrive at gala dinner hosted by Philippine Pres. Duterte
Now Playing: Trump meets with Philippine President Duterte
Now Playing: Philippine landslides, Korean leaders meet and penguins: World in Photos
Now Playing: 20 dead after bombing in Philippine cathedral during Sunday Mass
Now Playing: Prince Philip apologizes to car crash victim
Now Playing: Nearly 300 people feared dead after Brazilian dam collapses
Now Playing: Spanish boy found dead in borehole after dire 13-day search
Now Playing: Arctic fox comes to check out some camera gear
Now Playing: Pandas play as the Lunar New Year nears
Now Playing: Heroic milkman catches falling baby from fire
Now Playing: Small plane carrying tourists collides with helicopter in Italian Alps
Now Playing: Meet the man at the center of the Brexit drama
Now Playing: 200 feared missing after dam collapse in Brazil
Now Playing: Non-essential US embassy workers ordered to leave Venezuela after tensions rise
Now Playing: Opposition leader says he would consider granting Maduro amnesty if he cedes power
Now Playing: Ice crystals, the Australian Open and Venezuelan clashes: World in Photos, Jan. 25
Now Playing: Horses seen galloping through snowy fields from above
Now Playing: US pulls diplomats, families from Venezuela
Now Playing: Italy ordered to pay Amanda Knox for missteps in murder probe
Now Playing: US orders its non-emergency workers to leave Venezuela