Israeli, Lebanese, and US negotiators failed again to agree on an agenda for talks on the withdrawal of Israeli troops from Lebanon. An Israeli spokesman said after Thursday's meeting, ''We are running out of ideas. Apart from normalization, all the other items on the agenda have been agreed.'' Wednesday, Israel rejected a US proposal that Israel and Lebanon exchange letters setting out their views on normalization.
President Reagan is ordering US envoy Philip Habib back to the Mideast to help end the negotiations deadlock.