Technically this is the US Secretary of State; at this time that is Hillary Clinton (but is subject to change). It is her, or her office, that represents the United States to the rest of the world.
Johndeaft
imjazzy
Obama
A developing nation.
It is a representative Republic.
the primary concern of a representative should be the interests of the nation (as a whole) or of his or her constituency
Representative Democracy
A democratic republic
Libran N. Cabactulan
A diplomat representing their country is referred to as an ambassador.
Jay loco 956 4Bidden Kreations Brownsville Texas
A Delagate is A Representative to a convention or conference for example the United nation delagates with countries around the world
This question covers a broad area as "representing one's country" can mean as a government diplomat sent to another nation, or a president, who leads an entire nation and serves the nation as its top world representative. In lawmaking, or in creating treaties, elected officials in that line of work acts as a representative of one;s country. This can also carry on to athletics. For example in the Olympics, an athlete from Mexico becomes a representative of Mexico in the Olympic games.
The role that the president plays when he deals with foreign leaders is to negotiate on behalf of a nation. He acts as the representative of the entire nation.