How did the fighting in iwo jima and okinawa affect the allies' pacific strategy? it was decided that the soviet union would begin to send troops to the pacific. us admirals abandoned the island-hopping strategy for air assaults. truman decided to drop the atomic bomb on mainland japan. the allies and japan agreed to a status quo stalemate in the pacific.

Nuclear fission produces the atomic bomb, a weapon of mass destruction that uses power released by the splitting of atomic nuclei The fighting in Iwo Jima and Okinawa affected the Allies' Pacific strategy because Truman decided to drop the atomic bomb on mainland Japan.

Answer; 
The fighting in Iwo Jima and Okinawa affected the Allies' Pacific strategy in that; Truman decided to drop the atomic bomb on mainland Japan.

Explanation; 
President Turman, ordered that the new weapon (atomic bomb) be used to bring the war to a speedy end.
On August 6, 1945, the American bomber Enola Gay dropped a five-ton bomb over the Japanese city of Hiroshima.