one of the most effective ways governments cooperate to defeat terrorism is by signing treaties. joining in…

Brief Explanations:

Treaties and international agreements are legal - binding ways for governments to cooperate against terrorism. Seizing terrorist funds is also an effective cooperation method. Military strikes are more of a unilateral or coalition - led action rather than a core cooperative method in the long - term and comprehensive sense. Signing treaties and creating international agreements are similar, but treaties are a more formal type of international agreement. Seizing funds directly weakens terrorist capabilities and is a key cooperative effort among governments.

Answer:

seizing the funds of terrorist organizations.