Former secretary of State Hillary Clinton told Fox News on Thursday that some European countries have been reluctant to share information with the United States that could be used to fight terrorism, but that she would push for better cooperation as president.Appearing on "The O'Reilly Factor" to discussthat left more than 75 people dead, Clinton said some countries are not sharing airline passenger lists. She said during her time as secretary of state she negotiated with Europeans to get more of that information shared."We've gotten some," she said. "But we don't yet have enough."One problem is that there isn't even enough information shared across borders within Europe, she added. "They'd better address this, and it affects us, too," she said."We need to strengthen our alliances, and I include NATO in that," Clinton said. "We've got to do more to understand that this is a war against these terrorist groups, the radical jihadist groups. It's a different kind of war. We need to be smart how we wage it, but we have to be determined that we're going to win it."O'Reilly noted that after the November terror attack in Paris, President Francois Hollande wanted to invoke Article 5 of the NATO charter that requires all members to defend any member that is attacked by an outside actor.Clinton did not directly answer whether she thought Article 5 should be invoked against the Islamic State, but said she does believe American troops in Syria would only play into ISIS's plans – even if it was part of a larger NATO effort.Instead, she said, she would continue efforts to build a new coalition that includes Middle Eastern countries."We've got great allies in the region who are holding the lines for us, places like Jordan, like Israel," she said. "Others who are really on the front lines themselves."