LUXEMBOURG — The European Union on Monday banned the sale of luxury goods and products to Syria that can have military as well as civilian uses as the U.N. political chief demanded that the Syrian government stop using heavy weapons and comply with a cease-fire.

B. Lynn Pascoe told the U.N. Security Council in New York that the cease-fire, which went into effect on April 12, remains “incomplete” and “human rights violations are still perpetrated with impunity.” He said Syria has also failed to fully implement international envoy Kofi Annan’s six-point peace plan, saying the government’s compliance with requirements to release detainees and allow peaceful demonstrations, “are clearly insufficient.”