Answer:
They wanted to secure islands in the pacific because they needed a ground to stand on and then they could invade Japan a little bit easier because then they could ship supplies easier therefore getting it done quicker.
The Berlin blockade was a blockade by the Soviet Union (USSR) of the western part of Berlin, (controlled by the US, Britain, and France) The USSR wanted all of Berlin to themselves, and so blockaded the roads to stop the NATO nations from sending supplies to the war-torned Berlin. However, the US started the Berlin Airlift, transporting thousands, if not, millions of supplies to West Berlin over a period of times (and even Christmas Gifts :D)
hope this helps
