NATO continued its barrage of airstrikes on a major seaport in Tripoli overnight and in other nearby ports, destroying eight of Muammar Gaddafi's warships. NATO's attacks began when it became clear that Gaddafi's troops were increasingly using naval ships to target civilians, said NATO spokesman Mike Bracken. Bracken echoed the sentiments that Secretary of State Hillary Clinton expressed Thursday, saying that NATO's campaign was making progress and had succeeded in significantly setting back Gaddafi's forces. Though Gaddafi's wife and daughter have fled the country, his troops continued attacks on the Tunisian border, where thousands of Libyans are seeking safety from war in their country. The Libyan-Tunisia border crossing was effectively closed off Friday, preventing aid from reaching the refugees.