What a President Trump could mean for the world

After his decisive wins on "Super Tuesday," Donald Trump's nomination as the Republican presidential candidate is no longer a joke but a mathematical probability.

Facing the urgency of the situation, 60 prominent Republican national security experts issued an open letter, expressing their disapproval of such a controversial figure as the GOP nominee, but the message might have come too little, too late.

Hopes rely on the performance of rival candidates in the upcoming weeks, particularly in winner-take all states such as Florida and Ohio. Chances are that the party establishment may rally around another candidate - or even support a Democrat - against Trump. There is also a slight possibility of a brokered convention in case no single candidate gets the necessary number of delegates. Still, the prospects of denying Trump the majority seem increasingly unlikely. 

So far, the inevitable rise of Trump in American politics has proved conventional wisdom wrong, which is why, in the event of a presidential race between Democrat Hillary Clinton and Trump, a Clinton victory should not be taken for granted.

And given the global outreach of U.S. foreign policy decisions, the outcome of the presidential elections concerns us all. 

As emphasized on the campaign trail, this election is really a fight for the heart and soul of the United States. 

What Trump offers to cheering crowds is not simply an overturning of the policies of the previous president. His political stance on migration, freedom of religion and the prohibition of torture challenge core American values secured by the constitution. Thus, the elections will serve as a litmus test for the strength of democratic culture and institutions and define the way forward...