Pakistan was poised on Friday to host Iranian and US delegations for negotiations in its capital, although Tehran's participation remained uncertain after an exchange of fire between Israel and Hezbollah threatened this week's temporary truce.
Separately, Israel and Lebanon will hold talks in Washington next week, a US State Department official said, amid mounting international concern that Israel's bombing campaign on the Tehran-backed Hezbollah militants could shatter the already fragile two-week US-Iran ceasefire.
