Why do trusts established in certain offshore jurisdictions make good vehicles to launder money?

Which three circumstances are indicators for defining a customer as required additional diligence according to the Wolfsberg Principles on Private Banking? Choose 3 answers

A suspicious transaction report filed on a car dealer structuring deposits initiates a criminal investigation. The dealer changes branches and begins placing transactions with a frontline employee to whom the dealer has given numerous gifts.
This employee handles all of the dealer's structured deposits and does not report the suspicious activity internally.
The competent authority has advised the anti-money laundering specialist to avoid tipping off the employee until the investigation is finalized.
What action should the specialist take next?

A branch manager for a small community bank has a new customer who deposits four EUR 50,000 checks into one account. Shortly thereafter, the customer goes to another branch and asks to transfer all but EUR 1,500 to three accounts in different foreign jurisdictions.
Which suspicious activity should be the focus of the suspicious transaction report?

An AML compliance officer receives notice of government update including the names of the latest terrorists sanctioned by the United Nations Security Council. Which would be the most appropriate step to take?