In this press release, President Truman lays out a very simple plan for how to win the war.  He says that the US will simply destroy Japan's entire ability to wage war.  Truman does not go into any great detail about how this will be accomplished.  However, he does list some things that will be done.  He says that all of Japan's factories will be destroyed.  The same will happen to its docks and its communications facilities.  The US will also continue to attack by air.  Following that, there will be huge "sea and land forces" that will finish the attack, presumably through an invasion of Japan.