LUXEMBOURG, April 16, 2018 (Reuters) - The United Nations Security Council should keep pushing for a ceasefire in Syria, Dutch foreign minister Stef Blok said on Monday. "We have to keep pushing to get a ceasefire and humanitarian aid through the Security Council and eventually a peace process," Blok told reporters before a meeting of EU foreign ministers in Luxembourg. "The only solution is a peace process through the UN Security Council," Blok added.