Politics have become globalized as more and more issues have come to affect multiple countries. Some examples of this come from the environment and from trade.
Global warming is an issue that affects all countries. Therefore, issues surrounding it have to be discussed among all countries. Things like the Kyoto Protocols show us the globalization of politics on this issue.
Trade also affects many countries, particularly as trade blocs like the EU spring up. Right now, Greece's internal debts are a global political issue since they impact the rest of the Euro zone as well as the rest of the world.
Iwill just give you an example of Libya!
This country has been conducting abnormal politics, where the former president, Gaddafi has been in regime for over 4 decades, announcing that he wouldnt step down as he is the one who ferried the country to the place where it is now.There has been internal groups fighting to overthow him out, but the man was so rigid, and standing by his word!
But that action has attracted the foreign countries like EUROPE and USA to intervene the situation by knocking Gaddafi out of regime, and drive him away via heavy air strikes!
By that simple example you can just know that politics are global, that is they dont just end within your boarders, but extend down to neighboring lands!
The Blackwell Encyclopedia of Political Thought defines politics as the “process whereby a group of people, whose opinions or interests are initially divergent, reach collective decisions which are generally regarded as binding on the group, and enforced as common policy.” A curious feature of this definition is its omission of the inevitable conflicts that arise during such a process. In the popular imagination, after all, politics is most closely associated with a struggle for ascendancy among groups having different priorities and power relations.
A simpler if unusual definition of politics is that it is simply an old art of navigating through tensions among multiple “I”s and the “we” to achieve collectively desired ends. The character and form this art takes may vary with the type of social organization, level of engagement, and existing distribution of power. But in all cases, political strategies are deemed successful when the interests and actions of different individuals and stakeholder groups are aligned in a practical way towards roughly common objectives.