To find and open the safe in “The Cradle” mission of Call of Duty: Black Ops 6, follow these detailed steps:

### Step 1: Locate the Safe
1. Start the mission by riding in the passenger seat of a vehicle as it approaches the palace.
2. After the initial car chase, you will be dropped off near the palace. Take cover behind a nearby car and start firing at enemies.
3. Instead of entering through the main entrance, go to the right side of the palace. This will allow you to flank the enemies inside and avoid immediate combat.
4. Move to the left side of the palace’s main entrance. You will see a side door with several enemies nearby. Clear out these enemies to proceed.

### Step 2: Access the Safe Room
1. Once the area is clear, go up the stairs in front of you.
2. At the top of the stairs, you will find an ornate lobby with a radio on a table and the safe in the wall.

### Step 3: Tune the Radio
1. The radio is on a table directly to the right of the built-in wall safe.
2. Adjust the two waveforms on the radio until they become united. This will unlock a broadcast that reveals the safe code.

### Step 4: Obtain the Safe Code
– The code you receive will likely differ from the one provided. Ensure you tune the radio correctly to get your unique code.

### Step 5: Open the Safe
1. Punch your unique code into the safe to receive your reward.
2. You will receive $1000 as a reward for opening the safe.

### Additional Tips
– Be cautious as the room containing the safe is full of enemies. Take them out methodically to ensure you can safely tune the radio and grab the safe.