Hopes of a diplomatic breakthrough in the United States-Israeli war with Iran receded as a new week began, with talks aimed at ending the two-month conflict at a standstill and both Tehran and Washington showing little willingness to soften their terms. Iranian Foreign Minister Abbas Araqchi left mediator Pakistan empty-handed at the weekend, and US President Donald Trump cancelled a planned visit to Islamabad by his envoys Steve Witkoff and Jared Kushner. The deadlock leaves the world’s biggest economy and a major oil power locked in a confrontation that has already pushed energy prices to multi-year highs, stoked inflation and darkened global growth prospects. Iranian President Masoud Pezeshkian told Pakistani Prime Minister Shehbaz Sharif by phone Tehran would not enter "imposed negotiations" under threats or blockade, according to a statement from the Iranian government.…