US President Donald Trump has stated that the naval blockade has been completely effective, but has skirted a question from a reporter about whether he has a “red line” that would end the ceasefire with Iran.

“Well, we’re going to see, and we’ll be thinking about it on the flight [to China], and we’ll be thinking about it for the next little while,” the US president has said ahead of his departure from Washington, DC.

He has reiterated his claim that the US has defeated Iran’s military “very soundly”, adding that the blockade of Iranian ports has been “100 per cent effective”.

“One way or another, it’s going to work out very well,” he adds.