Six members of the contra leadership met separately with Secretary of State George P. Shultz and congressional leaders for a general discussion of the situation in Nicaragua and related issues.

Contra leaders were annoyed when they learned yesterday afternoon that a new administration proposal was being worked on but that Shultz had not informed them about it during the meeting.

Pedro Joaquin Chamorro, a member of the contra directorate, said last night no successful cease-fire could be achieved without difficult negotiations between the two sides.

In a guerrilla war, such negotiations are not easy because the opposing armies are dispersed over much of Nicaragua, he said.

A cease-fire cannot be achieved by outsiders, Chamorro said. "The Sandinistas and the resistance are the only ones who can decide it," he said.

In Guatemala City, a Nicaraguan official said the United States should first cease its support of the contras before the other steps are taken.

"The administration cannot have its cake and eat it too," Alejandro Bendana, of the Nicaraguan Foreign Ministry, said in an interview with "NBC Nightly News." "We must stop the killing of people. That's the first point, and then let's have negotiations, not the other way around."