Objective: Set fire in Mangano warehouse, to lure their firemen out
Go to the place showed on the map  - eliminate all the enemies in the area.
You will come upon a closed door on the right . Let the safecracker open it, you will find a better shotgun inside .
Let one of your family members set fire onto the target  (you must have a soldier or a capo with this speciality). Some guards will come out of one of the building - eliminate them .
Afterwards get into the building from the front with the help of the demolitions expert or the engineer (from the side) . Don't forget about the safe in one of the rooms. Go to the roof. From there shoot the enemies  - you can use a sniper rifle to do that.
Walk the foot-bridge onto the roof - of course look out for the explosions . Jump down through the hole in the roof and eliminate the guards .
Get out of the building and get on the crane, on which you will find the owner of this Business. Hit him a couple of times to take over this place  and set guards, as usual. Get out of the location.
Objective: Find a phone and call the next contact
Get to the nearest phone  and talk with Mangano.
Objective: Participate in a sitting with Don Mangano
Go to the place where the meeting will take place - of course react if one of your Businesses will get attacked and send soldier or capos there - also those from your team. Drive to the side of the building  and enter through the large door on the back (they will open once you approach them). Manganos are waiting inside  and they don't have good news for you.
As it turns out, the Manganos  will take out some of your men and take over a couple of your Businesses. Unfortunately there isn't much you can do about at this moment. Your soldiers can die during the defence. You can heal them using the Rapid Recovery from the Back Pocket menu (Michael gave you three some time ago).
Objective: Talk with Fredo
Talk with Fredo at your place.
Objective: Meet with Hyman Roth
Drive to the meeting place and talk with Roth on the jetty .
Together with agent Mitchell  they will assure you, that everything will turn out well thanks to completing a mission on Cuba.
Objective: Talk with agent Mitchell
Talk with the CIA agent standing beside you.
Objective: Drive to the airport and book tickets to Cuba
Go to the airport and go to Cuba with the help of the travel agency agent .