India, Sept. 10 -- US-Israel-Iran War Latest Live News: The US-Iran war has entered another potentially dangerous phase after President Donald Trump warned Tehran over what he described as new activity at Iran's heavily fortified Pickaxe Mountain site. Speaking at the Republican midterm convention on Wednesday, Trump suggested the United States could attack the underground complex if Iran continues activity there.

"We notice there's a little activity at Pickaxe. I would advise Iran not to get cute because we will have to hit them very hard." Trump said.

The warning puts Pickaxe Mountain back at the centre of the conflict. The site, located close to Iran's damaged Natanz nuclear complex, contains deeply buried tunnel facilities that have...