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Canadian Prime Minister Justin Trudeau arrives for a concert of La Scala Philharmonic Orchestra at the ancient Greek Theatre of Taormina during the Heads of State and of Government G7 summit, on May 26, 2017 in Sicily. The leaders of Britain, Canada, France, Germany, Japan, the US and Italy will be joined by representatives of the European Union and the International Monetary Fund (IMF) as well as teams from Ethiopia, Kenya, Niger, Nigeria and Tunisia during the summit from May 26 to 27, 2017. / AFP PHOTO / POOL AND AFP PHOTO / Eliot BLONDET (Photo credit should read ELIOT BLONDET/AFP/Getty Images)

Canadian Prime Minister Justin Trudeau arrives for a concert of La Scala Philharmonic Orchestra at the ancient Greek Theatre of Taormina during the Heads of State and of Government G7 summit, on May 26, 2017 in Sicily.
The leaders of Britain, Canada, France, Germany, Japan, the US and Italy will be joined by representatives of the European Union and the International Monetary Fund (IMF) as well as teams from Ethiopia, Kenya, Niger, Nigeria and Tunisia during the summit from May 26 to 27, 2017. / AFP PHOTO / POOL AND AFP PHOTO / Eliot BLONDET        (Photo credit should read ELIOT BLONDET/AFP/Getty Images)

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Canadian Liberal Party leader Justin Trudeau smiles at the end of a press conference in Ottawa on October 20, 2015 after winning the general elections. Liberal leader Justin Trudeau reached out to Canada's traditional allies after winning a landslide election mandate to change tack on global warming and return to the multilateralism sometimes shunned by his predecessor. AFP PHOTO/NICHOLAS KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)

Canadian Liberal Party leader Justin Trudeau smiles at the end of a press conference in Ottawa on October 20, 2015 after winning the general elections.  Liberal leader Justin Trudeau reached out to Canada's traditional allies after winning a landslide election mandate to change tack on global warming and return to the multilateralism sometimes shunned by his predecessor.   AFP PHOTO/NICHOLAS KAMM        (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)