I've received mandatory anti-money laundering training every year as an employee, but I'm not directly involved in handling money. The three essential stages of money laundering are:
An expensive condo would be ideal for the integration phase, as it is normal to pay off real estate over a period of time. A bunch of dirty payments, cash, loans from offshore banks, etc could be used. The real estate seller (trump) would have no idea that the buyer is paying off the rosneft bank loan in cocaine soaked $1 bills. Once the loans are paid off, the owner can sell off the condo, put the money in an upstanding us bank and invest it in Blue Chip US stocks.