Mutual Legal Assistance Treaties (MLATs) are agreements between two or more countries that provide the legal framework for the exchange of information and evidence in criminal and related matters. MLATs enable law enforcement authorities and prosecutors to obtain evidence, information, and testimony abroad in a form admissible in the courts of the requesting state. MLATs also establish the procedures and channels for making and receiving requests for assistance, as well as the grounds and conditions for granting or denying such requests. MLATs are an important tool for international cooperation and information exchange to combat transnational crimes, such as money laundering, terrorist financing, fraud, and corruption.
1: Treaties and Agreements - U.S. Department of State
2: Mutual legal assistance treaty - Wikipedia
3: International Exchange of Information Manual - GOV.UK
4: Convention on Mutual Administrative Assistance in Tax Matters

The Egmont Group of Financial Intelligence Units (FIUs) is a global network of FIUs that facilitates and promotes the exchange of information, knowledge, and cooperation among its members to combat money laundering, terrorist financing, and other financial crimes1. The Egmont Group has developed operational guidance for international cooperation and information exchange among FIUs, which includes channels, procedures, and forms for making and receiving requests2. Filing a request under Egmont guidelines is therefore a common and effective way for a regulatory body to obtain international assistance in a money laundering inquiry, as it ensures that the request is made through the appropriate and secure channel, and that it meets the standards and expectations of the requested FIU.
1: Home - Egmont Group
2: EGMONT GROUP OF FINANCIAL INTELLIGENCE UNITS OPERATIONAL GUIDANCE FOR ...

According to the Egmont Group of Financial Intelligence Units, which is a network of over 160 FIUs that promotes international cooperation and information exchange, FIUs should share information with foreign FIUs spontaneously, without prior request, when they have reasonable grounds to believe that the information is relevant for the receiving FIU1. This principle is also reflected in the FATF Recommendation 40, which states that FIUs should exchange information with other FIUs, especially when this information concerns money laundering, predicate offences, or terrorist financing2. Spontaneous information sharing can enhance the effectiveness of FIUs, as it can help to identify new leads, trends, patterns, or typologies, as well as to prevent or disrupt criminal activities1.
The other options are not consistent with the best practices of FIU information sharing. For example:
* In accordance with Wolfsberg guidelines, submit the information to the other FIU in written form. The Wolfsberg Group is an association of 13 global banks that issues guidance and standards on anti-money laundering and counter-terrorist financing. However, the Wolfsberg guidelines are not binding for FIUs, and they do not specify the format or channel of informationexchange between FIUs3. Moreover, submitting information in written form may not be the most efficient or secure way of communication, as it may cause delays, errors, or breaches of confidentiality.
* Take no action until contacted by the other FIU. This option contradicts the principle of spontaneous information sharing, as it implies that the FIU with the relevant information will wait for a formal request from the other FIU, instead of proactively sharing the information. This may result in missed opportunities, inefficiencies, or failures in detecting or preventing money laundering or terrorist financing.
* Request approval from the Egmont Group prior to sharing the information with the other FIU. This option is unnecessary and impractical, as the Egmont Group does not have the authority or the capacity to approve or deny individual information requests or exchanges between FIUs. The Egmont Group provides a platform and a framework for FIU cooperation, but it does not interfere with the operational autonomy or the bilateral relations of its members4.
FATF Recommendation 40: Other Forms of International Co-operation
Egmont Group of Financial Intelligence Units Principles for Information Exchange Between Financial Intelligence Units Wolfsberg Group Egmont Group

According to the Anti-Money Laundering Specialist (the 6th edition) by ACAMS, an institution's anti-money laundering program should be reassessed at least annually to ensure that it is current, effective, and compliant with the applicable laws and regulations. The reassessment should include a review of the institution's risk assessment, policies and procedures, internal controls, training, and independent testing. The reassessment should also consider any changes in the institution's products, services, customers, geographic locations, or business environment that may affect its exposure to money laundering and terrorist financing risks1.
The other options are not consistent with the best practices of maintaining an up-to-date anti-money laundering program. For example:
* The program should be evaluated and updated at least every six months by the Board of Directors.
While the Board of Directors has the ultimate responsibility for overseeing the institution's anti-money laundering program, it is not required to evaluate and update the program every six months. This may be too frequent and impractical, especially for large and complex institutions. The Board of Directors should, however, approve the program and any significant changes, and ensure that senior management implements and enforces the program effectively1.
* The program should be reviewed by a federal law enforcement officer for gaps in controls. While federal law enforcement agencies may conduct investigations or examinations of the institution's anti- money laundering program, they are not responsible for reviewing the program for gaps in controls. This is the role of the institution's internal audit function or an external independent party, who should conduct periodic testing of the program's adequacy and effectiveness1.
* The program should be sent to the institution's government regulator on a periodic basis. While the institution's government regulator may request or review the institution's anti-money laundering program as part of its supervisory or enforcement activities, the institution is not obligated to send the program to the regulator on a periodic basis. The institution should, however, report any suspicious or unusual transactions or activities to the relevant authorities, such as the Financial Crimes Enforcement Network (FinCEN) or the Office of Foreign Assets Control (OFAC)1.
Anti-Money Laundering Specialist (the 6th edition) by ACAMS

Economic sanctions are measures imposed by countries or international bodies to exert pressure on individuals, entities, or nations that engage in undesirable behavior or actions. Sanctions aim to restrict or prohibit certain economic activities with the targeted parties, such as trade, investments, or financial transactions. They serve various purposes, including achieving foreign policy and national security objectives and deterring undesired actions by countries or entities. Sanctions can be comprehensive (affecting an entire country) or targeted (specific businesses, groups, or individuals), with a recent trend toward minimizing harm to innocent civilians12.
References:
1. Council on Foreign Relations: What Are Economic Sanctions?
2. [Tookitaki: A Complete Guide to Sanctions](https://www.tookitaki.com/compliance-hub/what