Pakistan, May 22 -- The United States (US) and Iran remain divided over major issues in ongoing negotiations, but officials from both sides have reported signs of progress as diplomatic efforts continue amid regional tensions.

Read More: Iran, US negotiations reach decisive final stage

Speaking at the White House, Donald Trump said Washington would eventually secure Iran's stockpile of highly enriched uranium, which the US believes could be used for nuclear weapons. Tehran has repeatedly insisted that its nuclear programme is intended solely for peaceful purposes.

US Secretary of State Marco Rubio acknowledged that some positive developments had emerged in recent discussions, though he cautioned against excessive optimism. Rubio also w...