Reports have emerged that US President Donald Trump had sent a tougher peace proposal back to Iran and underlined the rift that the parties still need to close.

The US president has said his priorities for any deal include stopping Iran from any nuclear weapon development and reopening the Strait of Hormuz.

The US president has said his priorities for any deal include stopping Iran from any nuclear weapon development and reopening the Strait of Hormuz.

Trump claims Iran has agreed to halt nuclear weapons development amid ongoing efforts to finalize a peace deal in West Asia.

Trump claims Iran has agreed to halt nuclear weapons development amid ongoing efforts to finalize a peace deal in West Asia.

A finalised deal remains elusive among the parties. Read more at straitstimes.com. Read more at straitstimes.com.

A finalised deal remains elusive among the parties. Read more at straitstimes.com. Read more at straitstimes.com.

Iran states no deal with the US will be agreed unless its nuclear rights are fully secured, with key issues remaining between the two nations. Read more at straitstimes.com. Read more at straitstimes.com.

Trump has said his priorities for any deal include stopping Iran from any nuclear weapon development and re-opening the blockaded Strait of Hormuz.

US President Donald Trump said Iran had provided guarantees that it would not develop nuclear weapons, as he asserted Washington was nearing a "very good deal" to end the three-month-old war with Tehran.

Iran's parliament speaker and chief negotiator, Mohammad Bagher Qalibaf, made clear that Tehran would not move forward based on promises alone.