"State sponsorship of terrorism: Also known as "state supported" terrorism, when governments provide supplies, training, and other forms of support to non-state terrorist organizations. One of the most valuable types of this support is the provision of safe haven or physical basing for the terrorists' organization. Another crucial service a state sponsor can provide is false documentation, not only for personal identification (passports, internal identification documents), but also for financial transactions and weapons purchases. Other means of support are access to training facilities and expertise not readily available to groups without extensive resources."
Of course, my "terrorist" can be your "freedom fighter", it's all a matter of perspective