Mexican President Enrique Pena Nieto has compared Donald Trump’s rhetoric to that of Adolf Hitler.
Mr Pena Nieto said the Republican presidential candidate was using similar “strident” rhetoric to that which led to Hitler and Mussolini and gaining power in the twentieth century.
Trumnp was offering "very easy, simple solutions to problems that are obviously not that easy to solve", Mr Pena Nieto said.
"And there have been episodes in human history, unfortunately, where these expressions of this strident rhetoric have only led to very ominous situations in the history of humanity," he told Mexican newspaper Excelsior, the BBC reports.
"That's how Mussolini got in, that's how Hitler got in, they took advantage of a situation, a problem perhaps, which humanity was going through at the time, after an economic crisis," he added.
The Mexican president has previously refused to comment on the US presidential race.
Trump has said he wants to build a wall along the border between the US and Mexico to stop illegal immigration to the US from its southern neighbour – and the billionaire has said he will make Mexico pay for the wall.
President Pena Nieto said there was “no scenario” where Mexico would pay for the wall.