New Delhi, April 5 -- Donald Trump said the United States is engaged in "deep negotiations" with Iran and expressed optimism that a deal could be reached before his Tuesday deadline.

"There is a good chance, but if they don't make a deal, I am blowing up everything over there," Trump told Axios.

Trump reiterated his warning that failure to reach an agreement could lead to major US strikes on Iranian infrastructure, the news outlet reported.

The remarks follow an earlier social media post in which he threatened to target power plants and bridges if Iran does not reopen the Strait of Hormuz.

When asked about the risk to Iranian civilians, Trump said he believes those opposed to the government would back such military action.

"They are ...