The European Union Fourth Anti-Money Laundering Directive (4th AMLD) is a legal framework that aims to prevent the use of the Union's financial system for the purposes of money laundering and terrorist financing.
One of the provisions of the 4th AMLD is to lower the currency threshold for cash payments from €15,000 to
€10,000. This means that any person who makes or receives cash payments of €10,000 or more, whether in a single transaction or in several linked transactions, is subject to customer due diligence and record-keeping obligations. The 4th AMLD also extends its applicability to providers of gambling services, which are now listed as 'obliged entities'.
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Directive - 2015/849 - EN - Fourth Anti-Money Laundering Directive - EUR-Lex, Article 11 and Recital 23.
EUR-Lex - 02015L0849-20210630 - EN - EUR-Lex, Article 11 and Recital 23.
Key elements of the 4th EU Anti-Money Laundering Directive, Section: Cash payments.
Anti-money laundering and countering the financing of terrorism legislative package, Section: New EU AML
/CFT Regulation.
Reference:https://www.acams.org/aml-resources/eu-fourth-aml-directive/

The Office of Foreign Assets Control (OFAC) sanctions are extraterritorial in nature, meaning that they apply beyond the national borders of the United States. OFAC sanctions are intended to restrict transactions and the movement of assets between the U.S. and designated persons and organizations. These sanctions are imposed to disrupt the economic and financial relations between foreign countries and designated persons, organizations, or countries. These sanctions include prohibiting transactions, requiring the blocking of assets, and implementing targeted measures such as arms embargoes, travel bans, and financial or commodity restrictions.

'https://www.wolfsberg-principles.com/sites/default/files/wb/pdfs/wolfsberg-standards/8.%20Wolfsberg- Correspondent-Banking-Principles-2014.pdf - page 6 Monitoring and Reporting of Suspicious Activities The institution shall implement bank-wide policies and procedures to detect and investigate unusual or suspicious activity and report any such activity as required by applicable law. These will include guidance on what is considered to be unusual or suspicious and give examples thereof. The policies and procedures shall include appropriate monitoring of the Correspondent Bank's activity, incorporating due diligence results such as customer risk rating and other factors considered meaningful in the assessment of transaction activity risk. In turn, the results of suspicious activity monitoring shall be factored into the periodic review of the client's file, particularly when the results of transaction monitoring indicate elevated risk levels.

The potential red flag that alludes to money laundering is option B, where the trio engage in minimal gambling and combine the funds to request a casino cheque for the chips presented. This behavior is indicative of structuring, which involves breaking down large transactions into smaller ones to avoid detection by the casino and regulatory authorities. The fact that the trio only used a small amount of chips to play games, and then combined their funds to request a casino cheque, raises suspicions that they may be attempting to disguise the origin of their funds.

This customer action indicates possible money laundering because it could be a sign of layering, which is the second stage of the money laundering process. Layering involves moving the illicit funds around to create distance and confusion between the source and the destination of the money. Transferring all funds to another bank on the same day of large cash deposits could be an attempt to avoid detection by the bank's transaction monitoring system or by the authorities. It could also be a way to break the audit trail and obscure the origin of the funds.
The other customer actions are not necessarily indicative of money laundering, although they could raise some red flags depending on the context and the customer profile. Continually making weekly small cash deposits could be a sign of structuring, which is a technique to avoid reporting requirements by depositing amounts below the threshold. However, this could also be a legitimate behavior for a tutor who receives cash payments from students. Periodically initiating wire transfers to another account owned by a relative could be a sign of funneling, which is a technique to move funds between accounts that are not related to the business or personal activities of the customer. However, this could also be a legitimate behavior for a tutor who supports their family members financially. Opening a savings account and making frequent transfers from the checking account could be a sign of commingling, which is a technique to mix illicit funds with legitimate funds from a legal source. However, this could also be a legitimate behavior for a tutor who wants to save money for future expenses.
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CAMS Certification Package - 6th Edition | ACAMS, Chapter 2: Money Laundering Risks and Methods, pp.
35-40
CAMS Certifications: How to Get CAMS Certified | ACAMS, CAMS Study Guide, pp. 28-32 ACAMS CAMS Certification Video Training Course - Exam-Labs, Module 2: Money Laundering Risks and Methods, Video 2.2: The Three Stages of Money Laundering Exam CAMS: Certified Anti-Money Laundering Specialist (the 6th edition), Question 311, Answer C