(Bloomberg) -- Iran delayed the start of negotiations over a permanent peace deal with the US after fighting intensified in southern Lebanon, a potential setback to Donald Trump’s efforts to end the war and curb Tehran’s nuclear program.

A formal signing ceremony and talks planned for Friday in Switzerland between Iran and the United States were called off, as fighting between Israel and Hezbollah intensified in…

(Bloomberg) -- The US and Iran have postponed the start of their negotiations over a permanent peace deal and restricting the Islamic Republic’s nuclear program.