The Netherlands, part of the U.S.-led coalition that is bombing ISIS in Iraq, is "seriously considering" joining the air campaign across the border in Syria, Prime Minister Mark Rutte said Thursday. Rutte made the comments during a Dutch parliamentary debate about the Paris attacks last Friday, when 129 people were killed across the French capital. When the Dutch announced in September that they would contribute F-16 fighter jets to combat ISIS, Defense Minister Jeanine Hennis-Plasschaert said there was no international legal basis to bomb in neighboring Syria. "It is there now," said Defense Ministry spokeswoman Sascha Louwhoff. "Legally, there is no longer an impediment." Among Dutch considerations are a detailed request for military assistance from France, which has invoked a European Union defense clause seeking backup from allies, as well as the impact of military intervention and the role of Russia. "We are seriously considering looking at what a contribution could be on the Syrian side (of the border)," Rutte told lawmakers in The Hague Thursday.