Is the United States Justified in Interfering in Other Countries?

Is the United States justified in interfering in other countries conflicts?
Some people say that it is immoral by interfering with the problems in other
countries. Others say since that the United States is a major superpower in the
world that we should up hold peace in the world.
Looking at the past, the US has been in many conflicts with other
countries. An example of this was when World War begun. The United States
Army reached France on June 26, 1917, and was greeted with flowers and many
cries of ?Vive l' Amerique? or ? Long Live America?. Some Americans felt that
they were repaying France for its help during the Revolution. Which was only
their opinions. Many years after the first World War the United States entered
the depression which gave the US more of an economic concern than the events
A strong isolationist mood set in the country. When the European
powers began to prepare and move toward war (World War II), the people of the
United States felt that it was necessary to stay out of another conflict. The US
later passed the Neutrality Acts which banned arms sales or loans to countries
at war. War later broke out in Europe which caused many Americans to support
the Allies, but few wanted to be drawn into war. The United States finally
entered the was when Japan air forces bombed the US Naval Base- Pearl
Harbor. The US was stunned at this sudden attack and later declared war on
Japan. Three days later Germany and Italy declared war on the United States.
These past events showed that the United States had mixed feelings on
the idea of neutrality. During the first World War the US were some what proud
to be part of war. While during the second world war the United States wanted
to stay away from the fighting Europe.
Now at the present the United States has used their power to control and
maintain integrity of many worldly conflicts. But involvement has caused some
discretion between the American citizens. On May 13, 1998 President Clinton
decided to reprimand India for testing nuclear weapons.