Non-aligned nations, under pressure by U.N. Security Council members, backed off from their demand that the United States be condemned for the downing of two Libyan jets. The non-aligned countries instead urged the United Nations Tuesday to "deplore" the destruction of the Libyan MiG-23 jets, and they struck from a resolution they had submitted for a vote by the 15-nation Security Council an accusation that Washington violated the U.N. Charter. They also removed entirely a provision that urged Washington to refrain from committing any new air attack on Libya or "threats thereof." Diplomats said a vote on the modified resolution probably would take place Wednesday when the council resumed its discussions on the incident.