US 'Dominance Must Be Unquestioned': Trump Vows to Be 'Greatest Defender'
![US 'Dominance Must Be Unquestioned': Trump Vows to Be 'Greatest Defender'](http://cdn5.img.sputniknews.com/images/102717/14/1027171446.jpg)
Following decisive victories in Tuesday’s primary races, Republican presidential frontrunner Donald Trump delivered a speech on Wednesday outlining his “America first” foreign policy.