From early 1983–1984, Iran launched a series of four Valfajr (Dawn) Operations (that eventually numbered to 10). During Operation Dawn-1, in early February 1983, 50,000 Iranian forces attacked westward from Dezful and were confronted by 55,000 Iraqi forces. The Iranian objective was to cut off the road from Basra to Baghdad in the central sector.
Phillip Burton died in 1983 and was succeeded by his wife, Sala. In late 1986, Sala became ill with cancer and decided not to run for reelection in 1988. She picked Pelosi as her designated successor, guaranteeing her the support of the Burtons' contacts.