Proposals for immediate ceasefire to halt war circulated to US and Iran

Mediators want both sides to agree to suspend hostilities but Tehran warns peace talks ‘incompatible with threats’

• Middle East crisis – live updates

Proposals for an immediate ceasefire have been circulated to Washington and Tehran in an attempt to halt the five-week-old war and stave off an extraordinary threat issued by Donald Trump to bomb Iran’s power plants.

Mediators from Pakistan, Egypt and Turkey want both sides to agree to suspend hostilities and reopen the strait of Hormuz, to be followed by a period of detailed negotiations intended to reach a more complete peace agreement.