Pakistan, July 19 -- Iran's Supreme Leader Mojtaba Khamenei said repeated United States violations of the memorandum of understanding with Tehran had proved that President Donald Trump's signature was "worthless" and lacked credibility. His remarks came as military exchanges between both countries intensified following the collapse of last week's ceasefire, raising renewed fears of a wider regional conflict.

Moreover, Khamenei warned that the United States should recognise the determination of the Iranian nation and the "resistance front," saying they had learned lasting lessons from recent events. His statement reflected Tehran's increasingly firm stance as diplomatic efforts continued to weaken amid escalating military tensions across ...