World reacts to Britain's PM to-be Johnson

Britain's main allies congratulated Boris Johnson on Tuesday after he won a party leadership vote that will see him become Britain's next prime minister, but the EU warned of challenging times ahead over Brexit.

Here are some of the initial reactions from home and abroad to Johnson's victory:
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He will be great: Trump
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Challenging times ahead: Incoming EU chief
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"Congratulations to Boris Johnson for being nominated as prime minister," the incoming head of the European Commission, Ursula von der Leyen said in Paris. "I am looking forward to having a good working relationship with him. There are many different and difficult issues to tackle together. We have challenging times ahead of us."
"The president wants to work with the prime minister in the best way possible and beyond this, I'm going to reserve my comments as the news has just freshly broken."
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Iran 'not seeking confrontation'
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'Coordinate closely'
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"I want very much to work with him as quickly as possible and not just on European subjects and the continuation of negotiations linked to Brexit, but also on international issues on which we coordinate closely with Britain and Germany... like the situation in Iran."
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'The bankers' friend'
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"The people of our country should decide who becomes the Prime Minister in a General Election."
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'Do or die'
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