Which country? that's a really broad question
The Department of Homeland Security tries to protect the country from terrorist attacks and advises the president of threats it knows about. The CIA, the state department and military intelligence advise the president on threats from outside the country.
Just France. England and Spain also landed forces in the Mexican port of Veracruz, but due to President Juarez's negotiations, they leaved.
In the United States, the congress has the power to declare war. The president haspower to mobilize troops to repel attacks.
A war of attrition.
Spain
The President is still the President if he or she is out of the country - it's only when he or she is INCAPACITATED that the Vice-President becomes (acting) President.
Australia
A person becomes a President of A country when people selected or voted for them to be President or if in a country that is not democratic the military has to pick one to be the President
A president kind of deals with trading with the foreign country. A president also wants to have a good alliance with the foreign country so that if our country needs any help, the other country our president has an alliance with can help us.
china kon
UN forces confronted north korean forces to a stalemate from1950 to 1953