US President Donald Trump accused Iran of violating the ceasefire 'numerous times' ahead of the expiration of the truce deal, despite Washington's delegation en route to Islamabad for peace talks.
Trump's statement came as the ceasefire was set to expire on Wednesday, with the US and Iran remaining dug in rhetorically.
The stalemate has kept the prospect of a second round of talks uncertain, with Trump warning of 'lots of bombs' if there's no agreement before the deadline.
The Islamic Republic has been preparing to reveal 'new cards on the battlefield,' according to Iran's chief negotiator, Mohammed Bagher Ghalibaf.
The US has instituted a blockade of Iranian ports to pressure Tehran into ending its stranglehold on the Strait of Hormuz, a key shipping lane.
The blockade has sent oil prices soaring, with Brent crude trading near $95 per barrel on Tuesday.
