India, April 11 -- A cryptic yet ominous message from Donald Trump has injected fresh uncertainty into already fragile diplomacy, just as the US and Iran prepare for crucial talks in Pakistan.

Posting on social media, Trump spoke of a "world's most powerful reset," a remark that has reverberated across diplomatic circles due to its timing - just hours before delegations converge in Islamabad for negotiations that could reshape the regional order.

The statement coincided with the departure of US Vice President JD Vance, who is expected to lead Washington's engagement at the talks. While officials have remained tight-lipped, Trump's message has fuelled speculation that the negotiations could mark either a breakthrough-or a breakdown.

The...