None. By definition.
That is a possibility. Assuming you mean countries spying on each other, it can be considered as a form of violating the sovereignty. Sovereignty is an important aspect in international law.
why is it necessary for countries to partake in international trade
Chronopost is a French delivery service. It is international, and can ship to most countries around the world. They are considered to be reliable and legal.
International gatelines: is the borderlines of the countries.
Where you choose the countries to play in there is an option for "international" this is where you find all the international teams.
In order to be considered for the Olympic games, a sport must have an international organization that runs the competitions. It must be practiced in enough countries to make it truly international.
International Journal of Diabetes in Developing Countries was created in 1981.
Currently right now the International Space Station is the only space station in orbit. It has however been the only space station with such international participation that it can be really be considered international. Countries, including the US, have sent astronauts to Russia's former space station Mir. Just because the International Space Station is international, doesn't necessarily mean that every country uses it. Their are 15 countries that contribute to the ISS program including the US, Russia, Canada, Japan, and several European countries.
People/countries engage in international trade to build a strong relationship among themself.
An international driving license is permitted in a country where an international driving license can be optained, so therefore is most countries in the world.
International laws are meant to regulate relations bewtween countries and judge whether deeds between relating countries are right or wrong. Those deeds allowed by the linternational laws are considered right whereas not allowed are wrong. For example, A.B.C. weapons are forbidden by a international law. If one country is a party member of the law, the country has the obligation not to use these weapons otherwise the country is against the law. Another example, if country A has agreement with country B that both countries agree that their citizens are free to travel within the two countries without visa, neither of the two countries has right to refuse any citizen from country A to enter country B. International laws must be made by independent countries or international organizations.
101 countries