Kanye West is "deeply mortified" by his anti-Semitic actions.

The Stronger rapper came under fire last year over his controversial behaviour, including praising Adolf Hitler and selling t-shirts emblazoned with a Swastika, a notorious Nazi hate symbol.

However, he's now taken out a full-page advertisement in the Wall Street Journal in the form of an open letter, in which he explained he "lost touch with reality" amid a lengthy manic episode.