German Foreign Minister Frank-Walter Steinmeier called today for humanitarian assistance to be delivered to civilians cut off by government and rebel clashes in the north-eastern region of Sri Lanka, DPA reported. Steinmeier expressed concern for more than 300,000 refugees on a coastal 30-kilometre strip of land, in the area held by the Liberation Tigers of Tamil Eelam (LTTE) rebel group. "They have been completely cut off from international aid for more than 10 days," the German foreign minister said. "The most important thing now is to negotiate a ceasefire, to enable aid deliveries and medical care for the civilians in the disputed areas," he added. Steinmeier also called for the conflicting parties to urgently come to a political agreement. "The conflict won't be solved by military means alone," he said.