Washington DC, May 3 -- US President Donald Trump on Sunday (local time) said that his representatives are having "very positive" discussions, signalling continued diplomatic engagement even as both sides exchange competing proposals on regional tensions.

In a post on Truth Social, Trump said his representatives were actively engaged with Tehran and suggested the talks could lead to "something very positive for all".

He said, "I am fully aware that my Representatives are having very positive discussions with the Country of Iran, and that these discussions could lead to something very positive for all."

Trump's comments were earlier echoed by US special envoy Steve Witkoff, who told CNN that Washington remains engaged with Tehran.

"We'...