New Delhi, May 6 -- US President Donald Trump has teased a major announcement he plans to make before departing on his upcoming Middle East tour, describing it as "very, very big" and "one of the most important announcements that have been made in many years about a certain subject."

Speaking to reporters, Trump said the timing of the reveal is still being finalised: "It'll be either Thursday or Friday or Monday."

Without providing details, Trump underscored the gravity of the upcoming disclosure: "It's as big as it gets. I won't tell you on what, but it's very positive."

The President did not elaborate on the nature of the subject or whether the announcement is related to his Middle East visit, which begins May 13 and is expected to i...