Leaders embrace face masks as world deals with COVID-19

Philippine President Rodrigo Duterte wearing a protective mask, holds a meeting with members of the Inter-Agency Task Force on the Emerging Infectious Diseases in Malacanang, Manila, Philippines

US President Donald Trump, who for months refused to encourage mask wearing as a way to combat the coronavirus, on Monday tweeted a picture of himself with his face covered and touted his patriotism.

France's President Emmanuel Macron talks on the phone during the first face-to-face EU summit since COVID-19 outbreak, in Brussels, Belgium.

German Chancellor Angela Merkel puts her mask on during a last roundtable discussion following a four days European summit at the European Council in Brussels, Belgium.

Belgium's Prime Minister Sophie Wilmes, wearing a protective face mask, arrives for the fourth day of an EU summit at the European Council building in Brussels as the leaders of the European Union hold their first face-to-face summit over a post-virus economic rescue plan.

Canadian Prime Minister Justin Trudeau.

Iraqi Prime Minister Mustafa al-Kadhimi attends a news conference with Iranian President Hassan Rouhani as he wears a protective mask, in Tehran, Iran.

Denmark's Prime Minister Mette Frederiksen arrives for the fourth day of the European Council meeting in Brussels, Belgium.

Brazil's President Jair Bolsonaro is seen at the Alvorada Palace, amid the COVID-19 outbreak, in Brasilia, Brazil

Italy's Prime Minister Giuseppe Conte arrives for the first face-to-face EU summit since the COVID-19 outbreak, in Brussels, Belgium.

Singapore's Prime Minister Lee Hsien Loong arrives at a People's Action Party branch office, as ballots are counted during the general election in Singapore.

President Hassan Rouhani during a joint press conference in Tehran.