What is the correct procedure when merging onto a busy roundabout in Luanda during heavy traffic?

1. Slow down, yield right of way to all circulating vehicles on your left, identify a safe continuous gap in traffic flow, and enter smoothly without hesitating or forcing circulating cars to brake
2. Push into the roundabout aggressively, forcing circulating cars to come to a halt
3. Stop inside the roundabout after entering to let cars behind you catch up
4. Drive around the roundabout in the reverse clockwise direction